Empty ones...? Oh, I guess some of them probably are. I got one with a silver ticket inside it, though. There's going to be a party of some sort...! It's going to be at Tohjo Falls! Thrown by the Elite Four!

[ CLEARLY THAT'S EXCITING SOMEHOW...To the SHSL Gamer, at least. They had her at "party thrown by the Elite Four". ]

It's okay that you didn't find a ticket, though. It says you can bring a plus one, so if you want, you can come as mine?