I arrange a "photo pre-nup". She agrees to let me stop somewhere special to take one or two 4x5 shots, and I agree to go window shopping with her in some danged tourist trap neighborhood. That's a high price to pay. Fortunately, she never spends any money in such places. But there's really no issue walking down to the shore with a view camera while she's in the resort condo cooking or napping, or taking all the pictures I want with quickie MF gear, even on a tripod, cause she'll be snapshooting things at about the same pace with her little dual-usage underwater Nikon, or her "turtle camera" as well call it. She likes snorkeling and taking pictures of sea turtles. That's one place my own cameras never go - underwater, at least not deliberately.
Moral of the story - leave the view camera gear at home when on vacation with the wife, and stick with quickie gear. She has no objection to my Pentax 6X7 kit, which she knows how to use herself, or my Fuji 6X9 RF's.