Can I buy the iPhone 6S with all cash at an Apple Store?

I have reserved to pick up and pay for an iPhone tomorrow, which IIm getting my check tomorrow, and it just occurred to me that I may have to use a card and not cash which is a problem Because the check is around $2000 and if I put all of that in the bank I won't be able to spend it until the next day… Will Apple allow me to purchase my phone with cash?

Added (1). Also… I'm buying the no contract T-Mobile phone so I don't see why they would have a problem with me paying by cash

I can't edit iphone videos in windows movie maker? - 1

Ever since i updated my iphone with iOs 9, the videos i have on my phone can't be edited in movie maker. I've always used movie maker and its never giving me any problems. It says that it doesn't support the file that the movie is. How do i fix it?

Tips on how to waste my iPhone battery fast?

My iPhone 5c is stuck on the apple logo when it's being shut off. I've heard it's best to let the battery die so I won't have to loose all my Data and restore it. However, I need the battery to die as soon as possible!

I preorder the IPhone 6s 64gb Gold on 9/17/15. When will I receive it?

So I ordered the IPhone 6s On 9/17/15 and the guy at the store said that I would receive it on 9/25/15, but now it says that my order is still processing on my page. The thing is I also ordered another IPhone 6s rose gold 64gb on 9/12/15 and it says that it has already shipped and will arrive 9/25/15, so is my order status just wrong? Is it possible I will get the IPhone 6s gold by tomorrow?