Are there fees in addition to the rental rate?

Yes, in addition to the rental rate you will be responsible for sales tax of 7.1%.  You will also be responsible for a $1,000 refundable deposit on all boats and a $500 damage deposit on all personal watercraft. All fees and deposits are due at the time of pick up. The watercraft will already be paid for to enter the national park but you will be responsible for obtain a park pass for the vehicle towing it.