観覧車も700円が600円になるくらいな感じだったので、ハウステンボスは3600円の散策チケットで入って、見たいやつだけお金払って見るというのが正解な気がしました。
少なくともパスポートで入るもんじゃないですね。
ちぃおぼえた!

It felt like ¥700 for the Ferris wheel becoming ¥600, so I had a hunch that the correct answer was you paid ¥3600 for a walk-around ticket, then paid only for the places you wanted to see.

At the very least, you couldn't get into them with a passport.

Hmph, I'll remember this!