Girls only trip? Why? You women don't like your husbands? Or are you divorced and don't have husbands?
My sisters-in-law and my MIL all wanted to have my wife go with them on a girls only cruise. I had never been to the places where they were going to and I wanted to go too. The SILs and MIL said it was only for the girls. I said why don't you invite your husbands and we'll al have lots of family fun. (I knew they wouldn't like that because my wife is the only one of the girls that is still married.)
Well, they went without me and had lots of fun, some ribald fun. I stayed home and watched all 8 of our kids. Watching the kids for a week was no big deal. (It was the easiest job I've ever had.) The big deal was not going on vacation with the beautiful girl I love and adore.
Making memories together as husband and wife, is a wonderful way to strengthen a marriage. Making separate memories is a good way to drive a wedge in an otherwise good marriage.
For several years our friends would ask my wife and I how much I liked our cruise. I would look at my wife and ask, "Yes dear, tell them how much fun we had on your cruise." Part of the answer became how I wasn't invited to go.
I hope you decide to strengthen your marriage and invite your husband to go with you. Good luck to you and yours.
8Kidsdad