They rotate, get lost, guests leave some, I buy from yard sales when I see a good price:)
If good
personal fins is what you want- I'd recommend either bringing or pick up from Diver
Direct (great pricing) when you arrive.
Our Kmart also has quite adequate sets too.
In general, I recommend your own snorkel. You know, your own spit etc, Yes, they can be cleaned, and I do clean ours with 90% rubbing alcohol.
You can rent along with wet suit from the snorkel
establishments when you go snorkeling.
For the kayaking and going on boat rides with us, we have paddles and life jackets.