I've got a few U.S. trip reports for diving that might offer some guidance.
Key Largo with Rainbow Reef Dive Center 2013 -
http://www.scubaboard.com/forums/fl...iving-key-largo-rainbow-reef-dive-center.html (RRDC has expanded and moved their location a little, but on the whole, I suspect if you dive with them you'll have a similar experience).
Jupiter 2014 -
http://www.scubaboard.com/forums/florida-diving/491927-jupiter-trip-report-9-7-14-9-11-14-a.html
Emerald Charters Trip Report 2017 -
Trip Report - Emerald Dive Charters Trip Report Shark-feeding dives are controversial, but the range of species, time frame to see and closeness achieved with shark feeding dives is way better, if you're okay with it.
Morehead City, NC August 2015 -
http://www.scubaboard.com/forums/no...us-dive-center-aug-9-13-2015-trip-report.html You can get close to fairly large sharks without shark feeding, and I recommend this as a good intermediate step if you decide to work your way up to diving with tiger sharks later.
You may not like cold water much, but California is worth a trip sometime. The liveaboard operator I dove with went out of business after a big disaster (the
Conception caught fire and burned, killing many people), so the dive scene was changed some, but the diving ought to be much the same.
My Notes For Researching My California Dive Trip -
My Notes for Researching My California Dive Trip
Truth Aquatics Vision Trip Aug. 2016 -
Truth Aquatics Aug. 2016 Trip Report - California
Kelp, sea lions, harbor seals and garibaldi fish are really nice to see.