You can also walk to the tourist tunnel (which costs money) under the river but will take you to the Bund.

You can walk to the ferry that takes you to the other side of the Bund, that's further but doable too. Hmmm...how about taking the ferry one way, walking down the bund to the tourist tunnel, and taking the tunnel back -- sounds like a great 2-3 hour way to see the Bund.

The subway doesn't stop that near the Bund anyway, you have to walk the length of Nanjing Liu shopping street to get there. That walk is worth taking for another block of time, but avoid the "students" who want to practice English or show you their art work, those two bits are the starting hooks of well-known scams.

You can take the subway to People's Square and walk to visit the Shanghai museum in another two hour block.

A few stops the OTHER way on the subway is a massive discount store, sort of like a Walmart.

Buy a cash card for use on the subway. The cash card will save you a lot of time in ticket lines and can also be used to pay for taxis.

The Hyatt in Jin Mao is taller than the nearby TV tower, so paying what seemed to me like a high price to go to the TV tower isn't worth it. There isn't much right at the GH. There is a nearby shopping center to visit, it's right near that massive Citibank you'll see.

Get a guidebook and bilingual map (if you can find the latter) before you leave the U.S., they are amazingly rare in China.

I'm heading to Shanghai on Monday, also staying at the GH, but leaving on Saturday.