We come down to Delaware for a big family vacation every year. Surfing Crab is quite a haul from our place, often fighting through hwy 1 traffic, but the quality of the crab always makes it worth the trip.
A couple of tips:
SC doesn't take reservations, HOWEVER, you can reserve your CRABS. Call when they open at 3pm to get the size you want.
The parking lot can be crazy - Please do not panic. Please do not ignore the driver ahead of you and start a line of 8 cars that will be forced into backing up 2 blocks. Send someone from your party to let them know you're there and sit tight until a place opens up.
You will probably have to wait for your table. It's a popular place. I saw some clever people take beach chairs out of the trunk and have a little tailgate party until their name was called. Smart!
While SC can technically handle big groups, picking crab in tight quarters sucks (which is what happened for us this last time since everybody wanted to come) 2-8 people is best if you enjoy elbow room.
Get there early if you want fried oysters and deviled eggs (you do). The hush puppies are yummy.
We always get 6-12 extra crabs to make really fresh crab cakes for the next day. Double the pleasure!!