Often the big city FBOs publish overnight parking rates and fuel prices, sometimes with a note of "one night free with XX gallons purchased." Then when I stay overnight, there are four additional fees on the bill . . . . Or I drop in for lunch, stay an hour and a half and am asked for the full overnight fee and a handling fee.
This type of treatment makes pilots not go back to eat, and often leads to closure of on-field restaurants due to loss of fly-in business.
Maybe we should all call the businesses we visited, and tell them that the FBO added $25.00 to our lunch bill, so we will not be coming back again. Then the business could pressure the FBO directly (along with face-to-face pilot complaints) and the airport manager. When paying that $20 parking fee and the $5 handling fee for them to do no handling and only provide a walkway from the ramp to the sidewalk, I always comment negatively and when in a bad mood, vigorously, with comments about never coming back.
If only there was a way to spread the word, somewhere to post a true comment that wouldn't get taken down, leaving only the positive ones behind . . . .