Picking between two trips for efulimate break

Hi, right now I’m stuck between 2 efulimatebreak trips. It’s between thailand gateway or the Japan and korea trip. The reason I’m having a hard time is that both sounds interesting and fun. I always wanted to go to Japan and Korea. I recently got into Thailand. For these trips, I am traveling by myself so no friends will be coming with me. However I do know 2 girls on the Thailand gateway trip, but we aren’t friends I just know they went to school and they are bestie. They are both at the same time and same length of days. I just don’t know much about what each trip entails. This is be my first trip with this group and going leaving the countr. I mean I have been to Canada but I don’t count that.

Yes I did read the itineraries for both trips and watched tik toks but what are y'all thoughts on these two trips and what should I also consider? Other than cost.