Always bring US $ as emergency cash. Never plan on changing it (the hotels will do it for you at market rates) unless you need to. Get your CNY from ATMs. Bring multiple cards to access cash just in case. You can get CNY upon arrival. You can first try the ATMs inside customs, and if they do not work with your card there is an HSBC right outside customs (across the hall and to the right).

I'm assuming your tour covers transit from the airport to your hotel. If not, get the Hotel name written in chinese before you arrive. This is a good idea before you go anywhere on your own. The hotel concierge will do this for you. Always have a copy of your hotel business card when you leave so the taxi driver knows how to bring you back.

For what to pack - visit http://onebag.com -- With a little advance work you can travel with a carryon only. What a way to travel!

Don't bother with electronics in China. Legit places are more expensive than in the US. If you want to get bogus goods that are nearly as good as the original and don't care if US customs takes it away -- try the Silk Market. Many friends have brought home golf clubs and other goods for $100-$125 for a set.

If you want to see a more realistic market ask to go the Ghost Market (antiques).

If you have flexibility to dine on your own in Beijing let me know and I and others can provide some great suggestions.

Expect Beijing to be HOT and SMOGGY. You will have a hard time finding suitable medicine if you react these to conditions. I recommend bringing a good supply of things that you can't easily locate in China - Tums, Eye drops, Nasal Spray, Travel kleenex, Immodium.

Never drink the water - unless it's in a sealed bottle. This includes brushing your teeth. Don't take any drink with ice in it -- unless you are in a 5 * hotel (even there be careful).

You will have a blast. China is one of my favorite places to visit.