A group of 5 friends and I went to the pub late at night, around 1:30am. I had been trying to stop drinking at this point, and had picked up some poutine in a small container on the way to the pub since it was unlikely anywhere would have food options this late at night. Upon arriving and sitting down at a table, the waitress went around the table asking drinks for everyone. When she got to me, I asked for "A water please" since I didn't want to drink anymore and was really thirsty. The waitress Samantha gave me a lecture about bringing outside food into the business (who's kitchen was closed at this time, so I couldn't get food there) and not ordering anything to drink, and then just was incredibly off-putting and rude. I was pretty confused since the rest of my party was getting drinks and I just wanted a water, nothing too intricate or unheard of. If I was alone just asking for a water I would have understood, but that wasn't the case at all, everyone else in my group bought a drink and I was just hanging out with friends. She left and returned with the drinks and never brought me anything. Any of my friends could have asked for a water and then given me theirs, so there wasn't any additional process needed. It was one of the weirdest and rudest experiences I've had in a restaurant in recent memory, I've never been refused water at a pub or restaurant in my life, but I guess there's a first time for everything.