Firstly, I wish you good luck whatever you choose to do
In my opinion, at some time or other our bees will cause issues. Maybe for just a few short weeks but they will.
If they lose their queen, if they supersede to a less friendly queen, if they swarm (although this is usually an issue of perception), or if they become slightly mote defensive at the end of a good forage period.
It is then that problems can begin. You will need to be able to spot their change, act fast, and have a plan to minimise their negative behaviour to be able to keep your neighbours onside.
If you can contain them, perhaps be able to temporarily move them until they are back to normal, then you should be fine.
Obviously many beekeepers keep bees on allotments but it depends on so much local influence - size of plots, positioning of hives, maturity and awareness of other allotment owners, nature of bees, beekeepers, etc.
Personally, I probably would default to avoidance as I prefer others not to be able to interfere in my hobby and its year plan. I had to move my hives because someone else felt they were a problem. I couldn't persuade them to a more rounded view and the move came at a difficult time for the bees. Their original problem persists and my bees had a poor winter as a result of the change but hopefully they are alright now.
Another approach could be to run some basic beekeeping sessions with other members of the allotment. Most people will be interested and this will give you the chance to create an empathy between your bees and your neighbours. It will also allow you, once they are enjoying their experience of bees, to explain their behaviours when requeening etc. You don't need to do more than go through the BB and get them to remove a frame or two, spot a hatching bee, spot the queen, etc and to tell them a few facts of bee life.
Early engagement can by a lot of goodwill which may give you time if the bees turn tetchy to test and refine your management plan.
I wish you good luck,
Sam