Why did they go all the way to Zürich Zoo?
Show is called 「世界最高峰!究極の動物エンターテインメント」
"Sekai Saikoho! Kyukyoku no dobutsu entateinmento"
World's Best! Ultimate Animal Entertainment
They probably get discounts from JAL and Nikko Hotels,
and the show probably helps promote overseas tourism,
and Rena gets to travel for free!!!!