In the Op's case, I have to say that charging a fee is legit (Although not $16/box)

I've shipped truckloads of boxes to the Sheraton NY & Towers & other Starwood hotels for events. They charge a few bucks per package, but here is the value I see in the charge:

- Someone is there during biz hours to receive the packages, I'm still traveling. Nothing "left" at the door.
- Every received package is logged, so the hotel helps "track"
- The hotel holds the boxes until I need them
- The hotel delivers the boxes exactly where I need them (meeting room, my room, etc.)
- With mission critical materials the items are "looked after"

The Op was conducting business with the literature in the boxes, so it's a business expense.

Remember, if you are doing a meeting or many boxes, it's polite to inform the hotel ahead of time. Space is always an issue in busy hotels. Also, everything is negotiable, so include a box rate in your deal if signing a meeting contract.

Now if it's just one package and it can easily be carried with one hand, I'd hope the hotel would waive the fee at least for SPG Elites.