Going to Rehoboth Beach next week. What to see?

The fam and I are renting a beach house in Rehoboth Beach next week. I’ve never been there before. What are some must-sees and must-eats?

If it helps, our family group will consist of my parents (66 and 65 years old), my brother, his girlfriend, and their daughter (34, 24, 1½ years), my aunt and her daughter (50, 10) and me (31). My girlfriend (32) will be joining us for the weekend.

Thanks for the advice!

Dupe thread. Reported.

Closing at OP’s request. (Duplicate)