Is it too late to relocate to another venue? I'd be tempted to say "sod 'em" and look at going somewhere that will permit free landings in exchange for all that publicity, fuel sales, bacon butties and so on.
Wouldn't this be a great opportunity for a nearby RAF base (such as Scampton with all its WW2 history) to step into the breach? Free landings, trip on an RAF bus to Wickenby.......
Alternatively, much as it pains me to suggest shelling out for landing fees but it would only take 40 of us to cough up a tenner each to make it happen.