Mini bottles of alcohol onboard?

I am a bit of a nervous flyer and would like to drink a glass of wine or two on my looong upcoming flight, but I'd prefer to bring my own miniature bottles (both because I'm picky and because it is cheaper). According to the Play Airlines website, it says:

"You are not allowed to consume alcohol aboard an aircraft (whether purchased as duty free from us or someone else or otherwise obtained) unless it has been served to you by us."

Does that mean that if I ask a flight attendant to pour it for me, I can drink alcohol I brought on myself? Not trying to get hammered, just comfortably take the edge off.