Going on the Dawn in April....looking to plan excursions....How do they work? Are there buses/trams/vans ready for you when you leave the ship? Planning on doing Universal.....any suggestions for making that trip smooth? Also any suggestions for Miami,will have 2 children AND I notice our intinary says we will be in the Bahamas only from 7 a.m to 1 p.m. What can we do there in that short amount of time???