Hi Andy,
I joined my local BKA (Beds) and they are brilliant. I am doing basically what you are doing in a 13m x 100m garden. The local Assoc. told another starting Beek that gardens "Were just not suitable". So I said nothing and let the bees arrive on their own.
Hive (Nuc) is towards far end, to the left, because Errol has no children and never ventures down. Back neighbours are new, but have a high fence between, Pat and Shirley are fine with the bees. So far the "wild" bees (I think they are not "wild", they have escaped from someone elses hive) have been very mild mannered. But I have agreed with Mrs G. that any stinging will result in "Deportation" to another site.
I think keeping bees in a Garden is fraught with peril and I will have to continuously ***** their behaviour (forever) and be prepared to move them if it becomes necessary, or even if it just becomes preferable.
The only Children around the hive are mine, they regularly approach the hive, with suits for inspections but without suits by day. They happily lift the lid to see the bees in the miller feeder now, so their confidence is building.
So, my view is, "Buy your parachute early", i.e. if your assoc has a training apiary get an agreement with the lead that in a "stinging" situation you can move them there for a few days, cultivate a couple of local farmers along the same lines, work aggressively against swarming and have enough kit to catch a swarm immediately if your swarm prevention fails.
Well that's what I'm planning to do / doing. When it goes sadly wrong I will let you know, at the same time I am hoping you can tell me your plans to help improve mine. I am sure others on here will add advice and we may both wind up succeeding