Oh that is a difficult one Im going to go for too much rain because at least you can stay in doors and play games etc indoor camp fire to much sun no fires alowed and also lots kids getting sick from dehydration - they never drink enough no matter how much you nag also im scottish so burn easily too much sun not good.
Mummy Bag - although i quite fancy one of those new egg shaped bags
(I agree with not being able to get warm/dry although last week we were striking a tent and wind was soooo strong I though the tent was gonna take off with me holding on!)
(I have lots of socks too even though I hardly wear them have you tried baked alaska and phish food together - the B&Js stall in the Buchanan Galleries do it - it is the best of both worlds!)
frozen yougurt got some random childhood memories of it - more difficult to get in UK tho Oh Im home nxt weekend may just need to go to buchanan gallaries