Japanese by Example
Learning through examples in manga

Only for a little bit with 〜だけ

ARIA The MASTERPIECE » Volume 2 » Page 95

While waiting for his brother, Akatsuki finds Akari. He decides to pass the time by having Akari give him a tour of the area, but she explains that as a trainee she can’t take on customers by herself.

Akatsuki hops into Akari’s gondola, saying it’s okay as long as he’s not a customer; he’s a friend.

"It's really just a little bit!"

Akari is limiting the the gondola tour to 「ちょっと」, a little bit.