Wow, so this is beginning to go from preserving nature to NIMBY in a big damn hurry. If the Hampton Inn meets all code for building, setback and drainage, then they damn sure have a right to build. And further, when you go before the board sounding like a bunch of elitists who can't fathom something as disgusting as a Hampton Inn in the area, you are going to lose. And you'll darn sure deserve to lose.
However, if you go before the board and explain that you are concerned with the additional amounts of traffic localized to that area. Or, tell them that you are concerned about already crowded beach accesses becoming clogged. Then you may have a chance.
I live in Blue Mountian Beach. Rivard has all those mega mansions along Blue Mountain Beach Rd. I see many multiples of cars in front of each one every rental cycle. Heck there is a 4 bedroom place in the Village of Blue Mountain Beach that once had 9 cars parked at it for a week.
When my wife and I were planning our move, we would come down for 1-3 days at a time. We stayed at the Embassy Suites or the Courtyard Sandestin. Renting a condo for that short time would not have been effective for us OR a landlord. Had there been a Hampton Inn in Seagrove, we would certainly have stayed there.