Every single morning, just before alarm, I wake up with my clothes and sheets wet through. Not just a bit damp, but vest could be wrung, visible damp patches on the bed wet.
I'm not aware of being too hot the night, it doesn't disturb my sleep (except occasionally when I wake up cold because I'm wet) and it doesn't seem like how people describe creeping hot flushes.
I'm the right age (51) but it doesn't seem like what my friends describe.