Read about Sex Vacations where you pay a fixed amount and then spend a few days with your selection of beautiful women, a nice room, unlimited alcohol and food in an exotic location. Are these real? And if they are, please let me know which one is the best. Thanks!

PM me if you'd like. I've been frequenting 1 particular place and will be visiting there next week.

Haven't done it yet, but it's on my list. I have some limited research on this topic.
One option would be FKK clubs, ter has a seprate section on it. For first timers the FKK tour is recommended.
Among the sex vacations, I have seen ads for Viking, oxygen retreat and dr. A good resource would be the international sex guide where people seem to know more about these things.
Have fun and keep us posted.

Fully agree..check out the internationalsexguide site for Columbia mansion.  You probably would be better off just going out to very well documented mongering destination and enjoy the sights with easy access to p4p.  

I would say Germany FKK's and partytreff's are very hard to beat with everything being fully legit

Check out David 33 who is very helpful in Peru and you can get more than you can handle.  http://www.internationalsexguide.info/forum/forumdisplay.php?757-Peru-David-33-s-Forum