I believe access to tge gift store is prior to access to the museum
Yes
Yes you can
There are two gift stores. One has lobby access the other is after entry. The one you can get to previous to buying a ticket has, by far, a better selection. However, if you already paid to get in, the second offers some more affordable souvenirs. Keep in mind, you get what you pay for.
You can visit/shop the gift store without purchasing museum tickets........the shop is towards the right inside the main building; before the ticket counter
Thanks! Your answer is awaiting moderation.