is it cheaper to buy a catered buffet style seafood for a wedding or per plate?!
In almost any case, it is usually cheaper to have a buffet. Plus, your guests will have more variety and they will be able to eat as much as they'd like...I've been to a few plated receptions and left hungry every time!
Experience planning my own wedding!
Buffets are generally cheaper.
With seafood be careful of market prices.
Rent out a McDonald's for the afternoon