You must go to each attractions to reserve a time, some days before. Read horror stories of how people bought these and then got to the attraction the day of and they were sold out, sometimes for the entire weekend. So I called the Bush Center and the 6th Floor Muesum to inquire about this. There is not a problem with getting into the Presidential Center with City Pass. However, At The 6th Floor, they recommended unless I could get there about two days before to reserve a time, I most likely would not get a reservation for the weekend. The 6th floor is normally sold out by Friday morning for the entire weekend. We were going only for the weekend, so buying the pass would not work for us.
When we were leaving the 6th floor Saturday afternoon, a disappointed man was expressing his disappointment about his family not being able to get in the entire weekend, not sure if he had bought a pass or not.
The website does tell you there are a limited amount of reservations and they may be sold out. However, it does not go into any great detail. I don’t think it would be a problem to get into the other attractions. However, I recommend you call the places you want to visit if you have a small window of time and ask them directly about using the pass and reservation availability, so you are not disappointed about your plans not turning out the way you envisioned them.
Be mindful that you must go to each ticket office to get a reservation time slot. This in itself can be very time consuming, especially if you have to go to several days before your reservation.
You can save a lot of money. However, you don’t save anything if you don’t get to see what you want to see and you have to waste a lot of time driving around making reservations. My recommendation is to call ahead. If it is going to work, buy the pass. If you have a limited time frame and want to go to see the 6th Floor, buy tickets from the ticket office.
I have purchased passes like this in the past and highly enjoyed it. The problem is because of Covid and limited amount of visitors they are letting in at a time makes the City Pass a gamble.