Will bringing many belongings and no return flight cause issues with Thai immigration on a Visa Arrival?

The user is seeking advice regarding potential issues with Thai immigration upon entering with an Arrival Visa from the US, especially concerning bringing many belongings and not having a return flight. Responses indicate that the terminology used is crucial, advising that the user will be entering as visa exempt, not on a visa on arrival. It's recommended to apply for a Non-O visa before traveling, as Non-OA cannot be obtained within Thailand. Concerns about needing a return ticket are also noted, suggesting buying a throwaway ticket to satisfy airline requirements.