DS has just started in reception and its his birthday party tomorrow. Loads of kids coming from school which is great, but as DH and I don't always do pick up/drop off, not many parents may know who we are.
I've walked into kids parties before where you have no idea who the hosts are and it's a bit awkward as you don't know who's 'in charge' or who to introduce yourself to.
WIBU to wear some kind of identifier (badge? sash? something else?)to show we are the hosts? Obviously ideally we would be at the door greeting guests on arrival but I sense a party of 30 5 year olds just isn't going to go that smoothly to be honest 
Also any tips on hosting a party for 4-5 year olds? its the first time and first school one so I have no idea what the done thing is!
TIA