How many months of accommodation details are required for a Non-OA Visa application from the UK?

If they ever persist on a full month just goto Agoda and book with a big brand hotel that gives free cancellation. If they ever want a receipt just make sure the parameters of your booking allow for cancellation and a full refund. Don’t do this with small mom n pop places, only large name brands even though its more expensive initially, else you’ll find yourself in a virtual interrogation/refund struggle with booking agents because these smaller places are tired of getting burned. Many hotels drastically changed their cancellation policies after the COVID-ASQ days when the MFA wanted receipts for full stay (90 days in the case of Special Tourist Visa’s) with tax ID’s and nearly everyone was canceling these large bookings just to get approved.

Usually you just need to put your first hotel reservation.