My 14 year old son & I did this June. We chose the 11:45 spot because at that time they were running a discount on times after 11:00 or 11:30 (I don’t remember which). It was June & it was warm, but we still enjoyed it. I would say the earlier the time the better to avoid the heat, afternoon thunderstorms & for the most animal activity. By the way, I highly recommend this experience–it was fantastic!