DP and I have 3DC aged from 3 to 7 and they very rarely have sleepovers anywhere.This is mainly because we have no real need for them to stay anywhere else. We are very lucky to have family close by who babysit at our house if needed and we rarely go out.
My MIL told the DC (without discussing with me or DP) they could stay at her house over the easter holidays when her sister had come to stay. DC are very excited and really looking forward to it. MIL is 68 and a little slower than her 63yo sister. MIL is also very indulgent with DC and refuses to discipline/tell off at all. As a result DC take advantage and pretty much run riot when she is around. MIL sister is a little better but neither have a lot of experience dealing with young kids (DP is only child and his aunt is childless)
I have come to terms with DC staying over but am concerned about safety if they take them out. They don't drive and use buses to get everywhere. Its only 1 night WIBU to request they stay in the house for the whole 24 hours??