I know one who, along with her current husband, is raising her ex-husband's ex-wife's daughter. Mom is 27, dad is 25, kid is 12, and she's not biologically related to either custodial parent.
ouch. Yeah, getting into debt to pay for a day of partying is a stupid idea, especially in your 20s, regardless of if your marriage lasts.
[My will says that my burial/funeral is not to cost more than what i paid for my wedding, which, with rings, is less than a thousand dollars. With inflation, good luck to whoever is stuck with my dead corpse. Most likely by then the only thing $1000 will get you is a straw mat.]