Sensation/Cozumel

We are set to go on a 4 day cruise to Cozumel on the Sensation for the January 15 trip from Tampa. I have a couple of questions about this trip.

1. Best parking of the truck in Tampa area?
2. What is your opinon on the ship and the activities?
3. What should be a "NOT MISSED" in Cozumel?
4. What should be avoided?
5. Which day is the "Captains Dinner"?
6. I plan to see the...
The Ruins - 7 hours
Shopping Trip - 3 hours
Party Boat - 21/2 hours
Marine Snorkel trip - 2 hours
Atlantis Sub Trip - 1 1/2 hours

7. We ill be in port only 1 day, from 7am till 11pm, can I make the plan?
8. What should I leave out if the plan in a NO GO?
9. Any idea on the cost of the different trips?

Thanks for the assistance.