I had no issues using a couple of these for incidentals at an Embassy suites in TN and then used 12 of them ($600) + 4 credit card credits from Aspire, business, and surpass cards at another embassy in Myrtle beach. I did this at check out. She did ask a manager to come out and show her but once they got going it was quite easy. She’d enter in how much to charge ($50) and I’d swipe the card like a credit card and toss.
I would’ve been furious had they not worked as we billed tons of food and shopping to the room planning to use these. It was a major help as we used $600 gift cards, $200 Aspire, $100 Surpass, and $60 business card credits, totaling $960.