oh god - that would be awful.
We compromised ... pullups.
After 4 accidents in a day, she got pullups. 4 was the most I could handle.
In truth, it only took about 3 weeks from fully nappies to very rare accidents - and night time was basically overnight. She was dry a few nights in a row, so I put her in knickers and she was fine.
For holidays, I would negotiate ... back in pullups/nappies for that time. they have no control - its "I need to go to the toilet ... NOW" you have no time to get to a toilet.
Still try and get him to tell you, and get to a toilet. But wear pullups just in case.