The most unique beach marriage reception ideas are caused by imagination not practice. It's a time for fun and celebration, not pomp and rite.
To plan for your reception, you want first to understand.
What time of day you'll be having your marriage ceremony?
What kind of atmosphere do you would like to create?
Maybe you will marry in a romantic dawn rite followed by a breakfast reception. Heck, knowing "Aunt Jo" and "Grandma", they can doubtless take over and you will not have to stress about a thing. The benefit of being the full affair will be inclined to without you lifting a finger. "Because you are my spiritual head, I can respect and honor you, and continue to wish the Lord will bless you with knowledge and strength in leadership.