My friends didn't give me a card or a gift for my wedding, and I'm going to yell at them for it.
Did they tell you they would get you a gift?
No, but I got married! I just assumed they would give me something.
I understand being a bit annoyed at them for not getting you a gift for your wedding. However, they may have had good reasons for not getting you a present. You should just let it go and not start an argument about this.
I paid for them to come to the wedding though!
That was very nice of you to pay for their travel to be able to go to the wedding. However, if you had to pay for them to be able to attend the wedding, then it seems like they are struggling financially. If that's the case, you should be understanding of why they didn't get you a present.