The transfer tanks are also called "holding tanks" and below is a picture of what they look like labeled with dimensions.
The concern we have over causing damage to your unit stems from park history. There have been instances in the park where tanks have collapsed while being pumped out. Since we do not want to put you in a position where your unit and tank are damaged, and because we do not want to put the park in a position where we are held liable for the cost of damage, the policy had to be updated.
The park sells 300 gallon tanks* for $450 plus $100 install, please inquire in store.
*While supplies last
LxWxH: 95" x 56"x 16"