• จำกัดจำนวนครั้ง: มีการจำกัดจำนวนครั้งในการเข้าประเทศ ถ้าคุณอยู่เต็มจำนวนวันที่ได้รับอนุญาตทุกครั้ง
• เข้าบ่อยอยู่นาน: คนที่เดินทางเข้าไทยบ่อยๆ และอยู่นานๆ จะถูกจับตาดูเป็นพิเศษ
• ไม่อนุญาตให้เปลี่ยนวีซ่า: เจ้าหน้าที่ ตม. ส่วนใหญ่ปฏิเสธที่จะเปลี่ยนประเภทวีซ่าภายในประเทศ (เช่น เปลี่ยนจากฟรีวีซ่าเป็นวีซ่า Non-O) ถึงแม้ว่าในทางกฎหมายจะยังสามารถทำได้ก็ตาม

• The foreign spouse should prepare all required marriage registration documents from their home country before coming to Thailand.
• Enter Thailand with a visa exemption. You will have 60 + 30 days to complete the marriage registration process.
• ➠Steps to Register a Marriage with a Thai citizen in Thailand

1. Convert your visa-exempt entry to a Non-O Marriage Visa inside Thailand
❗But the common problem is:

• Foreigners who enter Thailand on a visa exemption usually cannot open a Thai bank account.
• So they cannot show the required 400,000 THB in a Thai bank.
• Some people may have a Thai bank account, but frequent travel in and out of Thailand results in immigration officials not accepting visa changes and telling them to apply for a visa online from outside Thailand before re-entering.
  
• Using an income affidavit instead of the 400,000 THB is sometimes possible, but there are issues:
  • Immigration officers may not accept it because it’s hard to verify.
  • Some embassies no longer issue income affidavits; you may need to return to your home country to get one.
  • You may need translations and consular legalization.
    
• ➠Apply for a Change of Visa Type to a Marriage Visa in Thailand

2. Apply for a Non-O Marriage Visa before entering Thailand (apply outside Thailand)

• Leave Thailand first — either return to your home country or go to a nearby country such as Laos or Vietnam.
• Applying for a Thai Visa in Laos: Is It Possible and How?
• Apply for the Non-O Marriage Visa outside Thailand, then re-enter Thailand with this visa.
• Once you enter Thailand with a Non-O visa:
  → Opening a Thai bank account becomes much easier.
  → Applying for a long-term extension inside Thailand is smoother and more straightforward.

• Limited Entries: They are limiting how many times you can enter if you always stay for the full allowed period.
• Frequent Travelers: People who visit Thailand often and stay for a long time are being watched closely.
• Visa Changes Denied: Most immigration officers now refuse to change your visa type inside Thailand (e.g., changing from a free visa to a Non-O visa), even though it is still technically allowed by law.