Can I go on a day trip & endure I can use a toilet stop
Respectfully, your question is quite vague. It would be helpful to those who can be of assistance if you provided some additional information.
If it's a coach, they stop for toilet breaks, if it's a train, they have loo's on board, although they may not be wheelchair accessible and obviously, if it's a car you can stop where and how ever often you want/need.
It appears that Sharon never returned to TripAdvisor after posting her cryptic post.