Graduation Party Etiquette?

okay so normally eveyones graduation parties are just simple backyard bbqs with a few family and friends and a cold hot dog. but for my gradutaion party im going alll out and im having a dj and catered food from manhattan and lounge furniture and waiters and bar tenders and 120 people. okay so i have a group of 12 friends who are all graduating and we are all really close but only 4 of us are having grad parties. so one of the girls who are having a party decided to tell everyone that no one is exchanging gifts bc were all just gunna get it back at each others grad parties, which is saying oh im not gunna get u a weddig present bc eventually youll just get me one. so i mean thats fine but i told them that it was a little rude bc ive spent months planning this and trying to make everything perfect for everyone and i was taught that it is rude to show up to someones house with nothing. i have already gone out and bought each of the girls who r having parties gifts like cute things for their dorms. i think its rude to show up to someones house with nothing but im not gunna walk into their backyard bbqs with theses amazing gifts if they show up to my extremely expensive party with nothing. i hope i dont sound like a brat but it hurts my feelings to know that my good frends have no manners. when somone opens up their home u bring something like dessert or flowers right? let me know what you think please :)