Change your locks to just your key. if they dont like it. get rid of the location. contract or not. no one but you should have the key. unless you want to audit you machines all the time. and maybe bill them for any loss.
I am located in San Bernardino Ca. and I have a huge area for deliveries. from San Bernardino to Bakersfied-Palm Springs-L.A-San Diego. Cat City- Santa Barbara. Low prices and great service. for years I Installed Vending Machines for Glacier Water and 7 up.
thats why you have the dutro. whaen you get to the bump. lift the front wheels up, by pushing down at the top of the dolly, resting the machine on the rear wheel. move over the bump, lower the front and the rear wheels should be easy to run over with a little lift from your shoulder.
I have been doing this for about a year now. You need a Dutro Dolly For sure. I also just started a Vending machine moving Company as a side line, I have a stakebed truck with a liftgate and all the moving equipmant. just need the customers.