What happens if I travel on a different date than indicated on my Re-Entry permit in Thailand?

When traveling on a different date than the one specified in your Re-Entry permit form for Thailand, it is generally not a problem as long as the Re-Entry permit remains valid. The date listed on the application is not restrictive; you can choose to leave on any valid date. The important factor is to ensure that you return before the expiry of your visa or the Re-Entry permit.