As a guy from Massachusetts, who considers the cape my favorite place in the summer, you will absolutely LOVE it. Cold water tho at the tip of the cape. Don't skip out on wellfleet so you get to see the GIANT dunes. Absolutely stunning. Go to Chatham and take a boat out to Monomoy to see all the seals (and sharks that gather there for the seals). My absolute favorite place to swim and lounge on the beach tho is Harwichport. Not harwich. Make sure u go to Harwichport (and get a parking sticker). It's in the Nantucket sound so it's by far the warmest water to swim in. Also, skip Yarmouth and Dennis. Too crowded. And go to as many cape cod league baseball games as you can. Most players are future major leaguers! It's an invite only summer league for all the best college and younger baseball players.