We have awful trouble getting plots shipshape or plotters shipped out. The amount of letters sent, appeals heard, more letters, more appeals ........it just goes on forever and all the time the weeds grow !
Having waited a year for my plot, I was quite vocal about re-letting unkempt plots before they go to the neck high in brambles state, but there appears there's not a lot can be done to speed up the process.
I'd just keep in contact with your allotment officer on a regular basis so as you're not forgotten or overlooked and spend your time planning so when you do get your keys, you're ready !