The usual Brunch spots will be open and serving Mom! Great Southern Cafe, Stinky's Fish Camp, The Red Bar, The Bay, Caliza, George's (now open Sundays). Bud and Alley's - breakfast on the rooftop or lunch!
We've also heard from these restaurants specifically offering Mother's Day brunch. There are more but these are the spots we know about do far:
Havana Beach Bar & Grill at The Pearl in Rosemary Beach
Hurricane Oyster Bar in Grayton Beach
Trebeache - the new spot at Redfish Village in Blue Mountain Beach!