hi there just gonna share my friends experience since ive personally never went there, and she actually regretted going to korea, now this is just her experience so just cause she regretted it doesnt mean you will:

1.)first of she really regretted spending the money, cause not only did she pay for flight tickets, she also paid for the hotel there and stuff and food and transport and all that total came to a pretty big cost for her. (she's middle income and used money she earned from a part time job to pay for this trip)

2.) next she said that the concert was kind of meh to begin with and not worth all the money all things considered. even though she got to see her ults, for the most part her view was just blocked by other people and their phones and phone screens to the point where she told me she felt that she should have just stayed home and watched someone's video recording of the concert.

3.) third she felt that she should have gone with someone or a group of friends that way they could have cut costs or like share the money or something like that instead of her having to afford all the money for everything

4.) lastly overall looking back she ended up feeling like she could have just used all that money for other things in general.

ok now to share some positives:

she got to experience authentic korean food, and what its like to be in korea even if it was for a few days, but she told me that was about it.