I consumed my fair share of milk teas while I was in Toronto and Sharetea was probably my favorite spot.
Simple concept: Get in line and order. What I like is that they have signs to indicate your sugar levels: 0%- 30% - 50%- 80%- 100%. They also have one for your ice levels. I had mine at regular ice and 30% sweet which was perfect. I couldn't imagine 100%- sugar shock.
They have tons of options that I've never heard of a little afraid to try to I stick with either taro or milk tea with tapioca balls. And to be honest, I only started getting the tapioca because of Sharetea. Typically I saw no, but honestly I had no idea what they were asking me so I said yes and ended up with them. I realized I actually liked them so it was a win for everyone. Of course the tapioca is a small upcharge.
Your drink comes out rather quickly. I love that you're basically in and out within a few short minutes. There are also some tables and chairs if you feel like hanging out for awhile, but I took mine and left. I was able to explore Toronto refreshed and happy with my milk tea in hand.