When I worked in A&E we used to dread the people who came in on a bender. Lots of slips and falls, punch ups, etc. The injuries were often fairly serious and they're nightmare patients
I'm not a medical professional but I know of several men (and a few women) who are the all nighter, won't stop drinking, don't call it a bnught when their mates do, latch o to "new best mate" drinking buddy types;
One was killed in a holiday resort from injuries during a mugging, he was found with serious head injuries in the morning in an alley and was taken to hospital but didn't survive.
The other, a relative, was also mugged and sustained a head injury but survived. I was amazed nothing had happened to him sooner. His wife was put through hell. The former man's family obviously lost him and are still dealing with that.
This ops dh is male so not as relevant but the women I know like this ended up being rape victims. Nothing sexual predators like more than a drunk woman away from people looking out for her.
Op's concerns and stress are illogical
And that's before getting onto the write-off of a family day and making her do all the work on her own.