I had a flat rate box of items shipped to SSR & p/u - no problem... Going home, we were at the Beach Club last day and took the box to the Conference Center to ship home. They did not use USPS, but rather FED EX. The 5 day FedEx was about the same price as 2 day priority w/USPS. I didn't need anything right away, so we let it go 5 day. Received home - no problem.