Ok, so here is the correct and updated information:
The Wedding will be at Caesars Palace in the Classico Room.
It will be at 3pm, so you need to arrive before that time (2:45pm maybe).
After the ceremony we will have time to go back to our hotel rooms and do whatever before we all have dinner. The dinner which we will be hosting, is going to be at the Monte Carlo Buffet. It will begin at 5pm.