Hi, although it has happened once and is likely to happen again, it is by no means necessarily going to be a regular occurrence at the moment.
My husband had his first (and only) bed-wetting incident several months ago - fortunately I had made waterproof bedding (pillows, sheets, mattress cover) part of our routine for several years, so when it happened suddenly, it was fine. After that incident I began using a waterproof duvet too, though so far it hasn't been needed.
My husband had a cough/cold at the time and had also taken a mild sedative on the night of the incident, and I suspect these all contributed to the matter.
He has occasional daytime incidents, again usually when he has a virus and is generally more confused and under the weather.
My husband was a little unnerved by the bed-wetting, so for a couple of nights he wore pull-ups. These turned out to be unnecessary, but once he had regained his confidence he went back to wearing normal underwear overnight.
It can be a fine line to tread between preparing for incontinence whilst keeping our loved ones both confident and continent for as long as possible.