Exactly what I would worry about. You obviously can’t play nonstop and I would expect being left caged,boxed or bagged repeatedly for extended periods would get pretty boring.

Sometimes when fantasy and reality collide things aren’t always as we imagined

That is why I would never do more than a day and a half at the most. Too much time ruins it in my opinion.

I think a longer session ( multi day) would require additional Dommes being involved from time to time.

Honestly, it was fine when our sleep schedules (or me being out of it) matched up or she was just taking naps for an hour or two ... But when I was wide awake in sense dep plus light bondage (wrists and ankles cuffed and chained but still with some movement) and she was asleep for a full 8 hours it was definitely torture, just of a very boring nature.

When I see my subs (which is only once every few months), it is usually for 3-4 days at a time with the play sessions lasting several hours (with varying intensity) and bondage being almost constant.

I think as a kidnapping scenario that could also work... But, it is a shitload of work for you as the Domme & means almost constant vigilance which is really exhausting as time goes by. Because of that, I can definitely understand limiting it like you do.

most definitely

Kidnapping scenes are wicked fun. I've been involved in a few with a group of friends, with a partner or roommate working from the inside to set up the abduction. How does it go on a professional scene? I'd love to get a glimpse into how the pros do it.

It's really hard to explain without giving it away. Basically you give them a 4 hour gap of time so they are not exactly sure when it will happen.