ans1 :well minimarg is 90 percent army kinda place so if u have some one in army then its better to go there otherwise except camping no other choice to stay only few general stores are available there they are worth of like chips juice etc
ans2:yeah you can definately hire public transport as astore to chillam is a good road condition infact i saw mehran there and was shocked as i was moving from deosai to chilum so but that car was standing on road and where i was coming wasnt a road so mehran was a bit far ...
ans 3 :domail is little village even people there can be counted such a little population and rainbow lake is under army area so without there permission u cant enter there ,as border is 8 km from there its very beautiful place and is lush green with small but deep lake reserving the beauty of the place .