Dd is 15. I think we are fairly reasonable , but I am not comfortable with her staying over at partys with alcohol. We prefer to come and get her at 11ish. Apparently this means she misses all the fun and all the other parents allow their 15yo (yr10s) to stay over. Is this right ? Are most year 10s allowed to stay over at mixed partys where I know there is alcohol and suspect there are drugs.