First time I'm throwing a 'real' party, currently putting my list together of invitees, hiring a small hall / band / buffet etc. I have a huge Family but they live all over the World so I'm inviting only Friends apart from Parents and InLaws. There's 30 on my list but obviously I know all won't be available - I'm wondering if that's enough for a decent knees up? Feel a bit apprehensive that it's not a particularly big number for a bash!