I’m sorry to confirm that Kissa Tanto is one of the most difficult resos to get in Vancouver just now. If you’re going to try a walkin, especially with four, I’d either go at opening or really late, especially on a Saturday. We went in March on a Tuesday and it was slammed. I liked the food but it was so loud in there we could barely hold a conversation, and we lucked out with a two-top where we could sit side by side. Good luck!