At Ueno Park 8

空飛ぶぞうさん、　おとな１枚、　こども１枚
そらとぶぞうさん、　おとないちまい、　こどもいちまい
Flying elephants, Adults 1 ticket, Children 1 ticket

In hindsight, this may not have been the most informative of signs.

Animals gain the -san suffix when children talk about them, or when adults talk to kids. It's like saying Mr. Elephant, kind of a personification that makes it sound cuter.