Thanks Mike,that looks perfect. Not sure if I want to spend anything extra getting ready to go. I will check out maybe the second hand shops and see what they have. Our big one folds up nicely. I told my DH I plan to pack the big one and he cringed. We only plan to do a beach day at one port with the baby. Then Key west we will be either staying on the boat or strolling the near by streets.
Thanks for the heads up about the seatbelts/carseat!