Interesting that he is reported as saying he wants a queueless check-in. I don't know for sure, but I suspect that the number of check-in staff on duty for Jet2 at any one time is directly proportional to the depth into which he is prepared to insert his hand into his pocket. As such either his handling agent didn't provide the contracted number of staff, or he isn't paying for enough of them (or if they self-handle he isn't paying for enough of them!).