@sueann20 I've been focusing most of my research on doing almost everything at the terrace but here is what I know so far:
If you use the free dinner included in the memorable moments package it's just in one of the restaurants. They reserve a section of it off for you but there are other hotel guests there, so you can't really have any dancing or things like that. It's basically just a dinner. You also need to pay $25 pp for anyone over the 40 people maximum
The Sea pier gazebo holds a maximum of 32 people with long tables or 24 with round tables for a plated reception. You also need to add $15 per person to the price of food (food is also on a per person basis but they have a range of prices)
For the beach reception, you don't have to pay an extra fee on top of the food. You just pay for the menu, which included 4 hrs of open bar and it has a huge capacity, something like 200 people. I'm not sure if you can go for dinner to the Flavours restaurant and then have a party at the beach.
I hope that helps!