You could always text them to bring gifts but tell them that its optional. That way you don't sound greedy and they they might bring something.

They probably will! Maybe just text them in a nondirect way about it like "Yeah, cant wait for all the gifts ;) lol"

Tell them to bring something. They just asked so you didnt have time to get any extra food. Tell them

just send another text and say- if possible please bring......(whatever you want them to bring) and finish with many thanks!

So I turned 13 a couple days ago and I've been planning a party. Well, it's today and I sent the last minute details and a few people just now asked and can come. Are they going to know to bring something? I don't want to sound greedy or whatever. Thanks.