We did a 6:30-9:30 tour. The guides were friendly and thorough in prepping us (lifejackets, whistles etc). However it seemed too much time was spent that wasn't informative, and wasted time we could have been paddling. Didn't get in the water til after 7. When we booked it wasn't made clear that most kayaks were doubles- we wanted singles. Never thought to specify at booking, nor were we asked. So be sure to tell them in advance. They didn't hav enough singles for us. Because the water is brackish, don't expect an experience with clear water, which IMO is implied in their picturesque marketing.. We did see several manatees & dolphins- but again, with such dark water, don't expect to see the entire animal. We stopped at a calm inlet for a " sunset viewing ", which would be a fine idea if it hadn't been 45 min prior to actual sunset. Again..lots of down inactive downtime. One of the guides was assigned to remain at the back of our group. We'll, he did NOT, nor did anyone else. We ended up in complete darkness around 9 p.m. with no guide in view. Long story, but finally a different guide saw us trying to figure out where to go and guided us back to the launch/landing beach. BTW, I'm a fairly experienced kayaker. As for the "bioluminescence experience " it was far less than represented. I do not recommend this particular trip. Perhaps a shorter excursion, or try the glass bottom kayaks for a better experience. In any case, our excursion was overpriced and very disappointing