Thank you for all of the suggestions - I really appreciate them! I just picked up a set of resistance bands from Target that have three varying resistance levels. I'm going took look online and see how I can modify the weighted moves in PF with these. I'll also try the body weight exercises.
I'm going to be traveling around Europe for three weeks with students. We're in a different hotel or guest house every 2-3 nights. Only about half of the hotels have weights. I'm definitely bringing the PF cardio DVDs, but I'm worried about annoying anyone in the rooms below me. So, I may have to do alternatives for the cardio, too.
Several years ago I worked in Germany for a while. I decided to lug my Firm "death box" with me. When I got there, my duffle bag with the "death box" in it got stuck at the top of an escalator. I started to take a nasty tumble down, but luckily a guy stopped me
No more taking any bulky or heavy exercise equipment with me ever again