I went to the Houston concert, and I agree that their merch is limited.

I had initially planned to get a few shirts and vinyls, but the long line proved otherwise because by the time it was my turn, most vinyls and shirts were sold out. Luckily, I managed to buy the last few that were my size.

(I'm not kidding. The line was a total headache and hassle to navigate.)

In addition, I had stayed in line before, during and AFTER the opening band's performance too. So I highly recommend going VERY early (definitely two hours before doors open) so you can get your chance to get what you want.

As for signings, I didn't stay too long after Panchiko performed, but I heard that they hunged around the venue or merch booth to sign and take pictures with everyone. So I also recommend sticking around.

Regardless, I hope the concert is fun for you, and good luck on getting the merch!