I remember an airport in the LA Basin, it may have been SMO. They monitored the radio and wrote down N numbers, sent the bill. Some people would use bogus n numbers in the dark, or so the story went.
Most places don't have "landing fees", but ramp fees. Use the ramp and pay a fee, some fees are waived for a minimum fuel purchase. The GA airports in the Las Vegas area are set up this way. Need to by 20 gallons to get the fee waived.
Most airports have overnight tie down fees, not daily ramps fees. The tie down has been waived with a fuel purchase.
I'm returning from Anchorage to the lower 48.
Fee waived at Carson City, fuel stop and pilot car for lunch.
Eugene OR, overnight, no fees for fuel purchase.
Bellingham WA, no fee for fuel.
Abbotsford BC. $20 Ramp Fee to clear customs, no room for fuel.
Prince George BC, overnight fee waived for fuel.
Fort Nelson, no fees
Waton Lake, no fee and free camping, stayed overnight
Whitehorse, no fee for fuel stop
Northway AK, no fee, no fuel available, Customs Stop
Gulkana AK, no fee, but needed fuel
Merrill Field, Anchorage, $10 per day tie down, 15cent per gallon discount for staying the their hotel (Ace Fuels) on airport.
Homer AK, no fee
Talkeenta AK, no fee
Fairbanks, fuel purchase and overnight (no fee), Ace Fuels
Tok AK, fuel stop, no fee
Whitehorse, YT, $6.25 overnight fee, transient parking.
and tonight back in Fort Nelson, fuel purchase, overnight, no fee
Tomorrow, Edmunton Villeneuve field, I'll let you know.