DD is having about 9 girls over for 2 1/2 hours from 5 to 7:30 on a Saturday in the next few weeks. She wants to 'hang out' with them and have pizza, play on wii etc. My question is can I let them get on with it? in the past we have had party games etc but she seems happy to not have anything planned. Also do I do party bags/gift on leaving still? Any experience of this age would be greatly received. She seems to have grown up such a lot in her first term at secondary.