The beach itself is a very good learning experience for your baby. The sand. The Ocean. The sounds. The Smell. Take it easy though. Don't be a dumbass and swim out 30 yards into the ocean with your baby.
He's not going into the ocean. I got him a baby pool, I will fill it with ocean water.
I'm going deep sea fishing while wifey will stay in hotel room with a baby. So far I just planned eating out and beach time.
When wifey and I go on vacation we always do fun activities and see things. Now, not so much.
I will probabaly buy booze and cigars and will just enjoy family time.