What are the key steps and timeline for applying for a Non-O retirement visa in Thailand from Ireland?

The Non-O retirement visa allows entry into Thailand with a valid stamp for 90 days. Applicants are advised to apply about a month before their intended travel date for efficient processing, particularly through the eVisa system from the London embassy. Upon arrival, one must promptly obtain necessary registration documents, including a TM30 and a certificate of residence, to facilitate opening a local bank account. It's crucial to note that funds must be 'seasoned' for at least 2 months in a Thai bank before applying for the 1-year extension, effectively reducing the timeline for preparing for this application to about 30 days.