Tequatl Noob
Just check the LFG in-game. I’ve never joined a map from there that has failed. There’s usually 10+ taxis during pre-teq.
Or teleport to Sparkfly Fen 10 mins (or even 5 mins, or even 2) before Tequatl comes and you’re basically guaranteed to be on a good map.
Go to map 15 minutes before reset and it’s pretty much guaranteed.
Unless you’re going to an unpopulated map at the last minute, there’s really never a time that Tequatl fails now. As people said, go about 10-15 minutes before the event start. If you are on a map that looks underpopulated at the event, pull up LFG and look for a Teq taxi, join it, and join on that map.