Graciela, I recommend that you look if you are interested in getting the NY pass. Include 100 or more activities and you will save a lot of money
Buy from the web
Yes you can but it is better online to save time
I suggest you buy online.
You can pay when you arrive, but I suggest you buy before from their web page and it is much faster. Inside you will be 3 to 5 hours more or less, that will help you to have an idea for your reservation.
If you wish, you can pay when you arrive, but there is always a line
Preferably paying online is faster
To avoid surprises, it is better to pay online ... and for other museums, check schedules and tickets. They tend to get quite crowded ... Tip the food cart in front of the Nusr Et restaurant is delicious !!!!!
You can pay on arrival
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