It is just hogging inventory space, can't do anything with it, no option to use. Option to move or discard is greyed out, won't let me discard it when I drag it to the trash bin, can't interact with it. Knew I should of spent those 80 Glory Badges on rising 2s.

I can confirm that I have the same problem.

@Lousy Same happend to me

I made a ticket right after maintenance but no response so far

https://pso2.com/news/server-info/maintenancenotes0804 Fixed issue in which players could not use the “599: Festival” ticket

i wouldn't call deleting it to be a 'fix'. damn... wtf?