How to play MvM mann-up without using up a ticket? (And getting no loot)

[DarkHoodness]

My friends started playing official mann-up MvM again for the first time in over a year - Sometimes they invite me to play with them. I like the fun and the company, but I don't want to keep buying tickets and spending money on a game I rarely play these days, so I don't care about getting loot.

So far I've been lucky during the past 10 games because I'm at the end of a tour and they've been doing missions which I've already done.

Is there a way to play without using up a ticket? (And getting no loot) I've heard you can quit a game at the end of the last round, but won't I get a cumalative leaving penalty? Won't that affect my queue times in the long run? Or will it not matter if I'm exclusively queuing with friends?

Cheers.

[Hacked Exhale]

Leaving penalty is only if you leave before 1 wave have been played. Doesn't matter if you win or lose.

[Deathrowboat]

Leave on the last wave before they kill the last bot/tank.

Else, when you're in the server, put your ticket on the steam market and then you won't get any loot and it won't be taken. Once the mission is over and you're in the lobby, take it off the market again and then repeat forever.

[DarkHoodness]

Alright thanks, I'll try that.

[Radioactive Panda]

Or choose a map that you don't want to ever do in a tour and do all others repeatedly as much as you want (Ex never do hamlet in 2 city and play the other 3 on repeat.

[Danizk0]

Epicly trolled