Limit 2 adults per family. HMMA requires children to be 6 or older to go on the tour. 

Do not register multiple families on a single form. However, if you are bringing another member's child because their adult cannot attend, you may include that child with your family headcount.

If you can't choose the correct seat quantity for your family size, that means the tour does not have enough seats availble for you. You will need to try for a different tour date or add your name to the wait-list.