I have 2 questions about cruises, i am new to this. First, how much is it to rent tux's? I have 2 kids in my family and they don't have suits or tux's yet. Also, is it possible to get a table for four?
Tuxes can be reserved in advance on the cruiseline's website (in most cases) and probably should be to make sure they're available. You'll probably have to get measurements from a local men's wear shop and send them to the cruiseline's shop for a proper fit. However, formal nights on ships are not totally formal anymore and about half the men will be wearing dark suits instead of tuxes. Just FYI.
You can get a table for four. Your TA should request this for you. If you do not get assigned a table for four, when you board go immediately to the Maitre 'D to see if he can get you reassigned. If not, you may find enjoyable tablemates who become life long friends. It happens a lot.