Good trip !
Both airports have good handling and fully good English speaking people on staff. We used Colt for planning. Universal has their people also on both airports. VHF coverage is sufficient all the way around. Enough alternates, along the shoreline and on the overflight.
Colt / Universal can set up the hotels for you and get the better crew rates. Both cities are safe enough to walk around during daytime, just be smart ablout going around. Plan well ahead, so everything can be coordinated properly is the trick.
Enjoy the trip !!