Mountain Lake is an 18-hole private golf course in Lake Wales, Florida, built in 1918 and designed by Seth Raynor. It sits in the $$$$ (splurge) price range for golf in Florida. The course is open all year. Tee times can be booked 7 days in advance. Play is generally limited to members and their guests.
Details like fees and seasons change, so call the course before you head out.