Hey buddy I dive Key Largo several times a year. I am going to assume you plan on doing the reef dives here and that being said the reefs are shallow and usually have next to no current. They are an easy dive and the Viz is usually great. Now Key Largo has earned the title as "Diving capital of the world" (weather it is true or not I don't care) and with that title you will see that the reefs can be full of boats coming and going. You will see Divers everywhere and will have other safety conserns as well (buoyancy,surge, fire coral).
If you are going to do more than 1 boat dive which I hope you do do the first one with a guide. Plus if it don't cost any more money you are out nothing. Guides can be GREAT or can SUCK but your safety and comfort level in the water is #1.
If you decide not to go with a guide or switch boats after your Guided trip I want to recommend Scuba-Do and Island Ventures These 2 outfits really care about the divers and customer service.
If you are going to do more than 1 boat dive which I hope you do do the first one with a guide. Plus if it don't cost any more money you are out nothing. Guides can be GREAT or can SUCK but your safety and comfort level in the water is #1.
If you decide not to go with a guide or switch boats after your Guided trip I want to recommend Scuba-Do and Island Ventures These 2 outfits really care about the divers and customer service.