Two clarifications:

1. Service recovery amenities at inactive gate readers is not a consistent experience. Your airport has to setup its gates to be in "Service Recovery" mode when not in use. (Gate readers can be in three modes: boarding, deplaning, and service recovery.) Service recovery mode will print amenities like hotel/meal vouchers and updated itineraries when an IROP BP is scanned.
2. A hotel voucher will only print at a service recovery scanner if an agent has personally added the hotel voucher to your reservation (not just a request for a voucher). Stations with IROP teams (hubs and big cities) have agents who add these things for customers on arriving delayed flights.

I always recommend trying to scan a BP at a service recovery scanner or unused gate before getting in a long line at the Need Help Center. It would suck to wait in a long line only to have the agent scan your BP and print out everything you need.

I also always recommend to non-status customers calling the number on the red Need Help? cards if you're affected by a delay. I have never waited forever on hold when trying to call that number. Even during big weather delays, the hold time was seconds long.