My wife's sister is very close to our family, and over the course of the last few years, it's become a common practice for her to do her laundry at our house. I don't generally mind this, my wife enjoys this as an opportunity to visit with her sister, and we've used it on occasion as free childcare.
Sister is now getting married. The husband is also a generally fine individual with whom I can get along. With him in the picture, sister will also be in a much more stable position financially.
However, my wife and I disagree on whether the two of them should now do all their laundry at our house. She doesn't want to lose the opportunity to spend time with her sister, whereas I see this as an opportunity to establish some boundaries based on her sister now having her own family.
I never really minded sister doing laundry, and I theoretically don't have an issue with her doing a couple extra loads, but something just doesn't sit right with me with the concept of my being a gracious brother in law turning into my being the family laundromat. They've apparently offered to pay, but that somehow makes it more off-putting.
I realize there are multiple perspectives on this, and my question may be ambiguous, but I guess -
I don't mind them coming over to visit, even frequently, but part of being a married adult is not relying upon your "old" family to do basic life things like laundry. I don't want to antagonize either her or my wife (who doesn't want to rock the boat and doesn't want to lose seeing her sister frequently), but - how is the best way to approach this topic in a gentle but suitably firm manner?
Age range of all involved individuals is 35-40.