DS1 is going to a party in a few weeks at a lego centre and it is a drop off and leave for 1 hr party as they are only allowed to have 3 adults stay so off course birthday boys parents and 1 other. I am only ok with this as it is a mother group friend so will know 90 % of the children and off course know birthday boys mum very well.

If it was a party at home or somewhere not enclosed like lego land I would not be comfortable.