I did this. Both of my ankles are essentially fused so flippers are useless. I originally assumed that meant no snorkeling. However, with a life jacket and using my arms, it works like a charm. Here’s my insight...when something unexpected happens or something is taken away, we make assumptions of all the things we’ve lost. The future things we won’t be able to do. Don’t do that because you never really do know until you get more miles down the road. Snorkeling is a little thing, but it represents the bigger point. And I saw some amazing creatures under the sea and got to experience this with my kids. Not to mention shocking our local guides...”you’re going???”. Yep.