how to meet other mwm for occassional fun

That's a tough one.  I'm not in a small town but I grew up in one.  I guarantee there are guys like you who are looking for the same but there are so many venues online...finding the right one is tough.  And certainly, meeting at the local hotel bar and finding each other is out of the question.  My advice...just be patient.  They are there...just keep searching and be safe.