Recently completed three stays here using the 40,000 THB credit vouchers and 2 night suite voucher. There was no issue with the vouchers being extended and accepted - was able to get 14 nights in total. Given a corner suite for all stays and really enjoyed the lounge service and offerings. The lounge was always very busy during the first stay but the became less so by the end of the last stay. Seemingly the staycation offers are drying up with Thailand and the world opening up more. Turndown service still given. It will be a real shame if they leave Marriott.