If the groom is okay with taking his mother on your honeymoon, then you have some serious problems to work out. I would not marry him. I also would tell his mother she is not planning your wedding. She can help, but she will not be running the show. It is your husband and your wedding. If he wants her help, it is one thing, but her to have complete control is another. If this is what she is going to do with your wedding, your marriage will be like this later as well. She needs to back off and let her son grow up. You need to stand up to her.

I mean this in the most respectable way... leave that bitch at the airport

Politely tell her that it would be uncomfortable if she went on a honeymoon with you. Honeymoons should be time spent between the wife and husband

Don't let her get away with this. She's not going to stop at the wedding. If your fiancé can't put her in her place now, I'd think twice about marrying into this life-sucking toxic family.

Watch out OP... My monster-in-law also wanted to name my baby, she shows up without warning, she wants to decorate our home, she still wants to dress my husband, including his underwear... The damn woman even showed up immediately after my 24 hours of labor and c-section, while I was naked and incapable of moving my legs, let alone cover myself, refused to leave the room for even a minute, woke up my newborn from his first sleep and got mad because of my lack of hospitality when I politely asked her not to come in without warning. We've discussed boundaries and it's much better now. Set boundaries and set them NOW. It only gets worse, trust me.....

**** that. Take her out of the picture. It's your moment not hers.

I thought the purpose of the honeymoon was to defile your mate!?!? I say go to Vegas and elope! Get married by Elvis or do your own thing!

Uh. ... no. any weak minded fu@k that would let his mother run his wedding is useless. it is the brides day. if she feels like she has to make any decisions it should be in her own situation....

Don't do what other posters are suggesting and elope or have a courthouse wedding, unless that is something you really want. You get married once, and that day should be how the two of YOU want it to be. I could understand an MIL who doesn't quite understand boundaries in wedding planning -- sometimes people get over-excited for their kids and try to make the kid's wedding be in their image, instead of their child's. The part where she thinks it's ok to come along on the honeymoon is the kicker. Insist that your groom tell her to go to hell. If he won't do that for you, and you go through with marrying him, joke is on you. Marrying him in secret just kicks the can down the road. She will find the next issue to butt in on in no time, and then you'll be married to a guy who won't stick up for you when she does.

Unless she plans to marry her son, it is both yours and his decisions. She can go sit in the corner with a Dunce cap on. :)