What should I do if my visa for Thailand is still pending before my flight?

A user is facing a dilemma as their visa to Thailand is still pending approval, and their flight from Vietnam is scheduled for the next morning. The community has advised that due to a Thai holiday, visa processing is likely on hold, and there may be difficulties reaching the embassy. Suggestions include considering rescheduling the flight and the importance of waiting for visa approval before traveling, as being in Thailand during the processing could potentially jeopardize the visa application.