When writing a wedding letter to a friend or sibling, a fun card might be the way to go, with which you have a close joking relationship. If you don't know the couple very well, it's best to avoid sarcasm and use a more elegant wedding card. These funny wedding wishes will suffice if you know the bride and groom's sense of humor.
“Being married is like any other job; it helps if you like your boss!”
“Let the fighting commence! Congratulations married couple.”
“Well done on finding someone who is going to annoy you for the rest of your life.”
“Congratulations on signing your life away!”
“Thanks for reminding me how much money I’ll be saving by not having a wedding.”
“Our marriage advice: Love, honor, and… scrub the toilet.”
“Marriage means commitment. So does insanity. You guys must be truly insane or madly in love.”
“I hope you get so many great wedding gifts that you don’t realize none are from me.”
“Don’t worry. If not with this one, you will get it right with the next one. Cheers!”
“The secret of a happy marriage remains a secret.” – Henny Youngman