Way too much to answer everything,I summarize a bit some answers.
These rules were hard,but good the camera one was discarded and that is your grandmother,and not your father who care about showering.Hard to not be able to touche these parts at all,sure.A shower without the chastity devices on every 3 weeks?I'm not sure it is without risk,especially about hygien...
In my opinion,it is harder,or even impossible,to make a man wear a chastity cage/belt(in a chastity belt for man,generally,the penis is in a tube inside),especially as it it way more painful for him to become erect in it than for us to become wet under the belt(my twin is totally unable to make love to his girlfriend when punished this way,it hurts him way too much to be aroused...).And,if worn for a long time,not sure there is no risk of damages.I thought not,but AmericanGraffiti(on misterpoll)had experienced it and seemed to have trouble after...
Not much problem about it,especially if he/she was approved,but looked closley to be sure we aren't having sex(if I was not belted).Even if I often find other times/places to be intimate,even with partners who haven't got the approval.
I think it is soon to allow him to spank you.Maybe he should ask to be allowed by your father each time he feels you "need" to be punished that way,at first?
I can't say I feel wrong you want to use your hand to service him sexually,at I often have sex with Emilie,even if belted and forbidden to do it...But prepare to become very aroused and frustrated!