Yes! Since it's pre-paid, you do have to call, but they will refund you for the extra person. Or list the 3rd person as being under the age of 2 so you don't even have to worry about the refund, then just tell them there are going to only be two people in your party when you get there.Can you book for a party of 3 and modify it to a party of 2 afterwards? I don't know if that works with pre-paid reservations, but I've done it before with regular reservations.