AITA for not wanting to go to Thailand?

So, my girlfriend told me about her idea to go to Thailand for vacation several times within the last few weeks although I said I‘d rather go somewhere else. Today she tried to convince me again but now I made it clear that Thailand is not an option for me for several reasons. I told her that if she wants to go there she can go without me and I wouldnt mind although I‘d prefer to go on vacation together with her but to another country thats closer to our home. Now she is mad at me and asked her friends if they wanted to go to Thailand with her. AITA? Is it okay to be mad at me in this situation?