Loos on planes-advice for wheelchair user please.

I really want to see family, but this will involve a 12 hour flight. I use a wheelchair, can weight bear, but can’t walk. I know I can transfer to aisle chair etc as I’ve been on a couple of short flights, but haven’t been to the loo on the plane. I know I won’t be able to hang on for 12 hours! Any advice gratefully received.

You should have asked to set next to the loo! That way you don’t have walk far

Or rather be far!