I spent 40 days in Thailand in Nov/Dec and 59 days in March/April. I plan to go to Thailand on 1st July after spending almost 2 months in Vietnam and I have a flight booked to Malaysia on 21st July (real one, not a temporary PNR reservation)
My worries stem from being questioned by the IO last time after she saw my flight to Vietnam was after 59 days.
Is it likely that I will get denied entry or am I overthinking it? The IO didn't explicitly say to get a visa next time but she did ask if I planned to come back to Thailand.
TLDR : Answer Summary
A user plans to visit Thailand again soon after previous trips and is concerned about potential entry denial due to questioning by immigration officials. They have already booked a flight to Malaysia after a short stay. Comments suggest that while questioning may occur, their planned stay of 21 days should reflect genuine tourism, especially with proper documentation like proof of accommodation, cash, and an outbound ticket. Politeness and preparedness are advised to ease the process.