If i join the all time low hustlers club can i still buy meet and greet for the august 6th show in London, ON?

For that tour you can only get a Meet and Greet if you bought your tickets pre-sale through THC and were one of the firt fifty to do so. So since you just got your membership, no you can't get the meet and greet. It's not something you buy, it's something only fifty people can get every date. Sometimes it's based on who gets tickets first (people get them within 10 seconds) or sometimes it's randomly chosen. Sorry! Just wait outside your venue and the guys will come out after the show!