Free/cheap stuff in/around Ocean City, MD?

Free/cheap stuff in/around Ocean City, MD?

We're going to Ocean City, MD next week. So far, the only cost we have is gas getting to and from. A friend is letting us use his condo for free, and we're bringing food and not eating out anywhere. Besides the beach (and I'm assuming there's a pool @ the condo), does anyone know of free/really (really) cheap stuff in the area to do/see? We = myself and my husband (in our 20's), our six month old son, my mother, and my 13 year old sister...so we're looking for things good for a wide age-range. :) I haven't been to Ocean City in over five years, I've heard it's been built up a lot. Any suggestions are appreciated. :)
IDs please and thank you

IDs please and thank you

Weeds?

Weeds?

tomato killer

tomato killer

Calla lily

Calla lily

Bottle brush tree

Bottle brush tree

SPICY SAUSAGE BALLS —I CALL THEM MY MEDIEVAL SNACKS.

SPICY SAUSAGE BALLS —I CALL THEM MY MEDIEVAL SNACKS.