The current price for premium unleaded gasoline is $6.099 at the Marina pumps. The pumps are open from 10-6 every day.
Purchase limits are established by credit card companies for fraud detection purposes, so you might find that the pump shuts off before your tank is full. In this case you will need to re-insert your card to continue filling. Your card company may also have limits on the number of times it can be used for gas purchases in a single day. Check with your credit card company for their limitations if this might be an issue for you.