[quote=@Lady Amalthea]
Okay, how many bathrooms on this plane? Murdoc and I were talking and came to the realization that we have a minimal of three chain smokers on this flight; which will last what? Eight hours at least? And one pregnant Carrington. So we figure we need at least one for each chain smoker to hide in, one for the one with child since she'll have to pee every five minutes and one for the other 18 passengers to share, lol
[/quote]

A flight from JFK to someplace in Europe will be at least 10 hours; often more. I'd say 10-12 hours is a fair estimate, having made that trip before. 

If we assume a Boeing 747, the standard configuration is around six bathrooms. There might be more or less on this plane since it's private.