1) Prague: AAA go there. Sonja, Aisha, others. Negotiate session contents BEFORE.

2) While in a Jacuzzi with a lady watch out for the positioning of the candles and if you don't; DO NOT lean back and rest your head on the edge. Ouch. And you'll spend the next few days washing the wax out of your hair.
3) Prague: Go there, but bring lots of money for your first trip. Not necessarily for the ladies, just in general.
4) Prague: Go there, but take a taxi to the sites you want to see. Or be in reasonable walking shape.
5) Prague: Go there, stay away from escort service, too much money and service is not GFE. But they do "deliver" to your hotel.
6) Depending on the Hotel you stay at make sure you have access to an anonymous/ US based IP address. Or at least one that does not say you are in the Czech Republic.
7)
YOUR CELL PHONE WILL WORK THE SAME WAY IT DOES IN THE STATES, OR CR, just shut off data roaming. So don't f*#%ing ask.

Lastly, the time difference is Prague is 6 hours ahead of the East coast, 8 hours ahead of CR. So check your watch and do not call any one at 9 am Prague time. They will be pissed at you.