Someone should post this on the Isles board.
The Islanders know more about losing franchise players than most teams' fans. Palffy, LaFontaine, Turgeon, hell even Bryan Trottier. Some left on good terms and some on bad but they all received a very warm welcome (and continue to do so) when they returned. Tavares will be different because of
how he chose to leave. For over a year he talked about how he expects to remain an Islander his entire career and hasn't thought about playing anywhere else. Then after keeping everyone waiting even past the actually deadline, he pulls the rug from under them and says it was his dream all along top play for the Leafs. And took less money to boot. Holy cow what a gut punch. He also put the Islanders in a pickle in terms of a them not being able to pursue "plan B" until he made up his mind (after the trade deadline and after free agency began). Yes he earned the right to test the market (no one is begrudging him of that) and yes he gave it his all for the Islanders (any rational Islander fan knows this). It's how it all went down that made Islanders fans (understandably) angry.
As far as Thursday's game goes, much ado about nothing in my opinion. I doubt there's any animosity between the players. He still has friends on the team and I'm sure they will welcome him and probably have dinner together. Most fans will be upset and boo. I expect the video tribute to not go over very well but I don't think we'll see any violence or any extreme behavior.
For Leaf fans going wearing blue and white obviously you know you will draw negative attention to yourselves. If you wear a Leaf JT jersey even more so. I just hope that outside of some good natured (albeit profanity-laced) ribbing, you're not treated too badly. It's just a game for crying out loud. 99% get this. Your 1% gives your fanbase a pretty poor reputation as well.
Here's to a good game.