Cool. As you can see in the photo, they're fairly long and narrow-bodied. I'd say they were probably 6' long or more. And the location is northern Florida, if any of this helps.
There are a lot of different corn and rat snakes around there that I've seen over the years, but I had not seen ones this size or with that particular color scheme. They're usually a red and tan pattern or just a plain black. Then we have the pygmy rattlers and full-size ones, and the moccasins, of course. These guys were just chilling near the top of the 25-30' dunes on the beach.
There was also a large turtle about 20 feet away from them digging a hole in the sand, then he buried himself for a nap, I suppose. He was tossing sand everywhere while I was trying to focus in on the snakes. Lots of activity out there this afternoon/evening.
Anyway...congratulations on the tour guide job. Sounds like a lot of fun. And welcome back!
RE: @Herpetologyguy, where have you been?!