Well, the cost of flight to Tampa/Orlando etc.
2-3 night stay at the motels, depends if you take another person or pair up to share a room.
Food cost for the time involved(varies based on each person's habits).
Transportation from Tampa, to Gainesville, rentals typically are 30-60$ per day, so I figure 150$ total there.
Canoe rentals run 16$ per person per trip(Santa Fe river and the Rainbow river)
Tube rentals: 5-10$
Park entry: 5$ and 4$
75$ per 3 day event.
Snorkel gear: 20-40$ Walmart

Marine part:
22$ per night, dorm style room, community Kitchen(so we can fix our own food etc and BBQ etc). Boat rental: split at about 150$ per load(up to 8 folks per boat) so 30$ ought to cover boating fees, they take us each place we want.

The Marine part is likely a bit cheaper and as much fun if not more so.

Not much really, just like you rented a car and took off to a park for 2-3 days.
By splitting cost with other folks for rooms and food, things go down a fair amount.

Some want to take driftwood back etc, some drive all the way etc.
Some folks can pair up and drive around with me etc also.
I'll try and make space for anyone that comes and shows up etc.


Regards,
Tom Barr