So, you generalize because of 3 people you’ve known, and assume what they were thinking. Devout muslims do not drink alcohol. That’s probably the reason he didn’t come. Furthermore, it is not a reason to label him. Maybe he didn’t like you.
As for the kid, maybe its father sensed who you really are, because even I wouldn’t want to socialize with you.
I have friends, Palestinians, well to do people, some born here, others came as kids, travelers, party goers, anazing halloween party makers, we get together often, go out, eat and drink, blah blah blah. I used to play soccer on Sunday mornings with a few of their cousins, and later found out. Never seen even a hint of anything else other than America, the melting pot. That’s “some” of tne muslims I know.
Got it?