Taking baby to the beach? Any tips?

My husband is being deployed soon and his family begged us to go on a beach trip with them (i didn’t want to, just because our son will only be 9 weeks) But, we’ve decided to go and try to get in as much family time as we can!

My question is, what items or tips can you recommend with taking an infant to the beach? I’m already stressed thinking about all of the items i need to pack for him! How can i make this easier on myself?

(We’ve already got him a tent, hats, swimsuits, and baby sunscreen)

Thanks ladies!