hotel bellman carts can run about $1000, so one hotel learned that for $5 apiece, there’s an almost endless supply at the nearest major airport

The AmericInn by Wyndham Denver Airport on Tower Road got smart, and sent someone to the airport to rent a lot of these, for a one time 5 dollar each fee.... that's smart!

https://viewfromthewing.com/hotel-gets-clever-uses-5-baggage-claim-carts-for-guest-luggage/

By the way, a frequent traveler great idea? Carrying a couple coins of that country, needed to unlock the rental luggage carts, because credit cards aren't an optioin in some airports, you must use a physical coin (1 GBP or 1 EUR, respectively). 

If you have at least 2 x 1 GPB and 2 x 1 EUR coins when travelling, or whatever needed for other countries, one for you and one for someone else (to pay it forward, or be really kind to strangers and make a friend)