You are already in the house with your wife and kids 100% of the time. Nesting doesn’t “solve” anything for you. If she wants to be away 50% of the time, let her work on what that looks like and how she’s going to pay for it while you use your gift of time to read Sandi’s Rules, process your emotions through IC or other means, GAL, and 180 any behaviors that aren’t working for you. Are you ready to DB and try Sandi’s Rules? The only logistical detail to look into is talking to a lawyer so your money isn’t used for her move-out, body enhancements, or vacations with OM.
I do have a true nesting story: two family friends tried it. The husband (LBS) cried that he still hoped they’d reconcile but he found used condoms of various sizes every time they switched homes. The wife (WAS) felt she’d been ethical by waiting to explore emotionally or sexually until she’d told him she intended to D and he agreed they should separate (nesting).
Your notion about a “No Sex” rule sounds naive.
Between what you and LH have written, it sounds like there's a boatload of people out there who are mighty careless about where they dispose of prophylactics in nesting situations. How hard would it be to put that crap in a plastic bag and toss it in a McDonalds or 7-11 trashcan? Unless perhaps they wanted to send a deliberate message.
Nonetheless the point remains. I'll refuse to entertain any thoughts of "nesting."