Hello Visa advice friends!

Photo (from my first trip to Thailand in 2019) for attention.

I'm a Canadian traveling to Thailand from Vietnam. As I understand it , I'm able to get a visa exception for 30 days. Plan is to land in Bangkok next week, by air. I was wondering if someone can a) confirm this and b) tell me if I need to arrive with anything documentation-wise (ie: ticket out of Thailand , proof of accommodation, bank statements ect). The only info I could find was quite old, and with the ever changing landscape of Thai immigration-- I figured it couldn't hurt to ask here.

Any clarification would be much appreciated! Thanks!