I agree ex-l following such strict rules gives a centre wasi a feeling of superiority, a right old ego trip I can tell you ... and, yes, the isolation from normal society becomes greater ... this ego trip is concreted in other ways too, like 'teacher' retreats etc.
I remember when I moved from a centre into Shanti Bhavan and feeling the food there wasn't as pure, as some BKs there were more pukka than others ... some had come from a centre background some hadn't ... in London the bhavan wallas are encouraged not to eat at GCH and to eat at the bhavans ... as the food is generally for those fully surrendered or full timers. In other words, the women who don't work.
You see Brothers, even though surrendered, are encouraged to go to work to bring in the money whilst the Sisters serve. This is the set up in London. The Brothers are almost frowned apon there if they get too involved in Admin. That is the domain of ladies there ... the Brothers there are encouraged more to earn the money and then in the evenings to carry heavy things around for the Sisters.
The bhandara is a general term that includes all the money from Baba's box and all the food in the cupboard, also the kitchen is referred to with this term, so when I used to do the weekly shop I would have to ask the centre-in-charge for the money, which would come from Baba's box rather than use the money I had earned.
There are many financial ones;
no lending or borrowing money at all, if you needed a loan you would need permission from a senior to get a loan from the bank. In fact, you take financial advice from Seniors!!!!! Many have done this to their peril, including myself.
I would have to get permission to go out and buy something personal like an item of clothing etc.
When you do your accounts, you would be required to declare any savings etc to the Yagya.
... and we were all encouraged to take out a standard BK Will.