We actually went from Aug 11-18 to AMI. We decided to try and see before we made any decisions. Our first three days on the gulf side were fine. The water on the northern part, where we were staying was fine. Very few fish, no odor, etc.. That all changed Tuesday late night/Wed and horseshoe crabs, larger fish and eels washed up and the odor on the beach was bad. We ended up on the bay side for Wed-Friday which was terrific. We had dolphins swimming by us, tons of fish and a few manatees. We kayaked and loved it. We biked around the whole island, ate, played mini golf, etc. We enjoyed our pool at our rental and outside of being directly on the beach at times, we had not issues at all. Thursday and Friday evening there were some dead fish but the odor wasn't nearly as bad as Wed so we did enjoy the sunset. Honestly the wind, tide, etc changed conditions on the island daily. Locations varied but we still had a terrific time!