A lot will depend on what kind of wedding you want to have.
Do you want a quiet dinner or do you want the bigger dancing, cake cutting etc.
At the beach there are quite a few places you can check out.
The Beaches Womans Club rents out for parties. You can even bring in your own caterer.
You could also check with the nicer hotels at the beach to see what they have available for parties of your size.
I have friends that have had weddings at the Sea Turtle Inn. They get married on the beach then head in for the reception.
Over in Orange park there is the Winterbourne and Club Continental. I have been to weddings at both of these places and they are very nice.
My advise would be to sit down with your fiance and decide on what kind of wedding you want to have. If your family and friends are big dancers you will want a larger room that will have a dance floor.(if this is true I can give you tips on picking a Wedding DJ) Or are they the type that enjoy catching up and visiting during weddings. Then a smaller more intimate setting might be a better choice.
Then start making phone calls to see if the different places can accommodate your wants and needs.
I was a wedding DJ on weekends for over 20 years, the thing to remember is this is your day

. Have fun with the planning.don't get caught up in the "Aunt Ava can't eat meat, Cousin Joe doesn't like seafood and so on......" issues that I have seen make brides "crazy".
One thing to keep in mind is Friday nights and Sunday afternoons will be better prices than a Saturday night.
Another couple tips

Tell the shop where you are getting your dress that the wedding is 10 days before the actual date just in case there is an issue there is still time to correct it.
Get your shoes and break them in early, a bride with sore feet is not a happy bride.
If there is a chance that you may "smash" the cake in each others faces(most couples say "No way that won't happen" but fall to the "peer pressure of the guests

) throw your boquet and garter first then cut the cake. That way you won't have to stop and clean up for the pictures before you continue.
Karla