Hello, I'm from Belgium and married to a Thai women in Thailand. She lives with me on a 1 year spousse visa valid untill 24 Nov 2024 in Belgium and she already have an belgium ID F card valid for 5 years staying in Belgium

I have 2 questions:

1) Can she go to Thailand and back to Belgium without problems just using her Thai passport after the valid Visum date of 24 Nov 2024 and her Belgium F-card ID valid for 5 years?

2) If I want to stay in Thailand do I need a visum before I go. Or can I apply one wen I'm there already. Because I can go without Visum for 30 days? What visum can i apply for because I want to start family and business in Thailand with my Thai wife.

Thanks