TLDR : Answer Summary
The original poster (OP) sought advice on essential items to prepare before moving to Thailand. Key items mentioned include debit cards (Charles Schwab, Revolut, Wise), an International Driver's License, health insurance (advised to purchase before arrival), a local SIM card, cash (recommended in large, clean bills), and passport documentation. The community provided various suggestions, such as bringing additional cash, obtaining a Thai driver's license, using credit cards without foreign transaction fees, and downloading local payment apps like TrueMoney or Moreta Pay. Additionally, they emphasized the importance of being prepared for cash transactions in many local venues.