@Clzw929,
Your marriage is in trouble because your husband is a mean, abusive drunk who seems to think drinking to excess at social occasions is the norm (it doesn't have to be).
All the rest of the story is catering to that - his desire to get drunk on someone else's dime. He also does seem to want to get away - who the hell goes to a rehearsal dinner when they're not a close friend and not a relative and not in the wedding party? He could have left the day of or taken a redeye late on the 29th.
I suspect he's not as on board with having a kid as you are.
I realize you want to have a child, but he might not be the best person to have a child with.