Hi Nicola
Not all of the used gear is physically stocked in NY. The best thing is if you contacts us a few days before you want to be in the store and place the item on hold, and we can have it transferred to the NY store from our warehouse in New Jersey.
Adorama is indeed also closed on Saturdays; Adorama's owner is an observant Jewish gentleman, which means that we also close early on Fridays and certain notable Jewish holidays thru the year.
Helen Oster
Adorama Camera Customer Service Ambassador
helen@adorama.com