I can't comment too much on the card vs. cash debate as I exclusively use a card for zoo purchases (I do carry some cash, but never needed it). I will say that going card-only can be risky if there is an internet outage; that happened to my local movie theater one time, and I was forced to walk to a nearby bank in order to draw cash, only for the card system to come back online by the time I got back.
On the subject of online-only purchases, I am fine with that as well. However, I am NOT a fan of requiring reservations/booking time slots. One thing I always liked about zoos as opposed to other forms of entertainment (theme parks, concerts, etc) is how much they support spur-of-the-moment decisions. For example, during my Florida 2022 trip, I was not planning on visiting Jacksonville Zoo at all, but I reached the city at around noon after 6.5 hours during my drive down and decided right then and there to visit it. Granted, I had to purchase the ticket online with my phone, but I was able to get in no problems.
Requiring reservations and booking time slots puts pressure on the visitor, and it doesn't help that these tickets are usually non-refundable. Most people visit on their own time and pace, and I feel forcing them to arrive at a specific time puts pressure on them to do more planning then they are used to. They are also pressured into purchasing tickets earlier since they are limited, and most zoo websites show how much is left. Granted, I usually visit facilities on the weekdays and never saw a weekday get completely booked. I can understand this being a thing back when the pandemic was in full swing, but they really should not be continuing this system into 2024 and beyond.
Especially if they're not going to even enforce the time slots to begin with. On top of what others have shared in this thread, I too have had instances where I booked a time slot, arrived outside of it, and was still honored. My 2021 trip to the Greensboro Science Center had me arriving late and they still honored my ticket. I have also seen it not enforced in the other direction either; during my Atlanta 2022 trip, I booked a ticket for Greenville Zoo and chose the 9:30am time slot (as I knew Greenville would not be a full day zoo, I bucked my own trend and gave myself extra time in the morning). I managed to arrive early and was still let in without having to wait, no questions asked.
On the subject of online-only purchases, I am fine with that as well. However, I am NOT a fan of requiring reservations/booking time slots. One thing I always liked about zoos as opposed to other forms of entertainment (theme parks, concerts, etc) is how much they support spur-of-the-moment decisions. For example, during my Florida 2022 trip, I was not planning on visiting Jacksonville Zoo at all, but I reached the city at around noon after 6.5 hours during my drive down and decided right then and there to visit it. Granted, I had to purchase the ticket online with my phone, but I was able to get in no problems.
Requiring reservations and booking time slots puts pressure on the visitor, and it doesn't help that these tickets are usually non-refundable. Most people visit on their own time and pace, and I feel forcing them to arrive at a specific time puts pressure on them to do more planning then they are used to. They are also pressured into purchasing tickets earlier since they are limited, and most zoo websites show how much is left. Granted, I usually visit facilities on the weekdays and never saw a weekday get completely booked. I can understand this being a thing back when the pandemic was in full swing, but they really should not be continuing this system into 2024 and beyond.
Especially if they're not going to even enforce the time slots to begin with. On top of what others have shared in this thread, I too have had instances where I booked a time slot, arrived outside of it, and was still honored. My 2021 trip to the Greensboro Science Center had me arriving late and they still honored my ticket. I have also seen it not enforced in the other direction either; during my Atlanta 2022 trip, I booked a ticket for Greenville Zoo and chose the 9:30am time slot (as I knew Greenville would not be a full day zoo, I bucked my own trend and gave myself extra time in the morning). I managed to arrive early and was still let in without having to wait, no questions asked.