Sorry folks I should've mentioned.
Absolutely kids and better halves are welcome on the night.
We have organised to dump our kids at the oldies because we want to enjoy the night and to be honest we've been having a crap time with Lachy not sleeping and need a break.
Something about him not sleeping and obsessive compulsive behaviour, no idea where he gets that from...lol
Long story short everyone is welcome but we just need a break ourselves and can look after the older kids ;)