Exchange rates don't exactly translate into cost of living. It's like the difference between living here in San Antonio, TX and living in New York City - your dollar is the same, but it definitely does not spend as well. And trust me, things around Tokyo in general and other major tourist destinations? Pretty dang pricey.
Dartz, you're probably going to want to make sure you hit up Yokohama. They got themselves the tallest second-tallest building in Japan there, the Yokohama Landmark Tower. Trust me, it is well worth the 1,000-yen ticket to ride one of the fastest elevators in the world (2nd fastest at 12.5 m/s) to get to the observation deck, known as the Sky Garden, and enjoy the 360-degree view it provides.
Right across the street from Landmark Tower is the famous amusement park, Cosmoworld, with its infamous Cosmo Clock ferris wheel. There's also the rest of the Minato Mirai 21 development (of which Landmark Tower and Cosmoworld are a part of), chock full of shops, business, and tourist attractions that you will easily spend a full day on.
Also, I cannot recommend enough that you visit Yodabashi Camera in Yokohama. This place is a freaking mecca of consumer electronics. They have everything at Yodabashi's: home appliances, computers, PC parts and accessories, Gunpla, figurines, consol systems, cameras, and cell phones.
I also highly recommend you visit Yokosuka - home of the US Navy's Seventh Fleet and a good portion of the Japanese Maritime Self-Defense Forces. While you will not be able to get onto any of the bases, you can go to Yokosuka's Central Park - it's located at the city's highest elevation and offers a stunning view of the harbors. You can also do the next best thing and visit Mikasa Park - the place where the famous Battleship Mikasa, Admiral Togo's flagship from the Russo-Japan wars, is preserved. There, you will be able to tour the ship itself and even see the Admiral's very own stateroom and wardroom. (It is telling that the anterooms of the wardroom have gun ports for crew served weapons - while the space is posh, this was still a warship, full stop.)
Getting between Yokohama and Yokosuka is a piece of cake. Just get to the Yokohama Station (The BIG one with connections to EVERYTHING) and get on the Keikyu Mainline - There's also the JR, but the Keikyu has a much faster express train. You'll want the express train with the green kanji - that one has the fewest stops and will get you there in about 45 minutes. The one with red kanji has more stops and will get you there in about an hour. Do not get on the black-kanji train - that one hits EVERY STOP and you'll be on the train for a long long time. (It's only really meant to get people over on short trips or to the larger stations where the express trains do stop.)
Oh, and one final tip: Snag yourself a PASSMO card! These little babies make it super-easy to get around using the trains (and the buses, too!) and can be used pretty much anywhere on the JR system. Additionally, a lot of convenience stores and other vendors accept these cards as payment, and even some of the vending machines use them. They use a near-field system so you can leave the card in your wallet and just swipe the whole kit over the reader pad at the turnstiles.
I honestly wish I could go with you, but you know how it is. Have fun in Japan, Dartz!
Dartz, you're probably going to want to make sure you hit up Yokohama. They got themselves the tallest second-tallest building in Japan there, the Yokohama Landmark Tower. Trust me, it is well worth the 1,000-yen ticket to ride one of the fastest elevators in the world (2nd fastest at 12.5 m/s) to get to the observation deck, known as the Sky Garden, and enjoy the 360-degree view it provides.
Right across the street from Landmark Tower is the famous amusement park, Cosmoworld, with its infamous Cosmo Clock ferris wheel. There's also the rest of the Minato Mirai 21 development (of which Landmark Tower and Cosmoworld are a part of), chock full of shops, business, and tourist attractions that you will easily spend a full day on.
Also, I cannot recommend enough that you visit Yodabashi Camera in Yokohama. This place is a freaking mecca of consumer electronics. They have everything at Yodabashi's: home appliances, computers, PC parts and accessories, Gunpla, figurines, consol systems, cameras, and cell phones.
I also highly recommend you visit Yokosuka - home of the US Navy's Seventh Fleet and a good portion of the Japanese Maritime Self-Defense Forces. While you will not be able to get onto any of the bases, you can go to Yokosuka's Central Park - it's located at the city's highest elevation and offers a stunning view of the harbors. You can also do the next best thing and visit Mikasa Park - the place where the famous Battleship Mikasa, Admiral Togo's flagship from the Russo-Japan wars, is preserved. There, you will be able to tour the ship itself and even see the Admiral's very own stateroom and wardroom. (It is telling that the anterooms of the wardroom have gun ports for crew served weapons - while the space is posh, this was still a warship, full stop.)
Getting between Yokohama and Yokosuka is a piece of cake. Just get to the Yokohama Station (The BIG one with connections to EVERYTHING) and get on the Keikyu Mainline - There's also the JR, but the Keikyu has a much faster express train. You'll want the express train with the green kanji - that one has the fewest stops and will get you there in about 45 minutes. The one with red kanji has more stops and will get you there in about an hour. Do not get on the black-kanji train - that one hits EVERY STOP and you'll be on the train for a long long time. (It's only really meant to get people over on short trips or to the larger stations where the express trains do stop.)
Oh, and one final tip: Snag yourself a PASSMO card! These little babies make it super-easy to get around using the trains (and the buses, too!) and can be used pretty much anywhere on the JR system. Additionally, a lot of convenience stores and other vendors accept these cards as payment, and even some of the vending machines use them. They use a near-field system so you can leave the card in your wallet and just swipe the whole kit over the reader pad at the turnstiles.
I honestly wish I could go with you, but you know how it is. Have fun in Japan, Dartz!