About hitchhiking a boat

I got a ship ride from Manuas , Brasil to Tabatinga , Brasil. This place is the border with 2 countries: Leticia, Colombia and Santa Rosa, Peru.

Originally I planed to leave when the ship arrive my destination. I ended up staying 2 weeks there.

The captain's attitude changed a lot.
The first he said:' welocmed to our boat!'
He also gave me a cabin room (camarote) as I got harassed by 1 of his cargo crew at midnight 1 time.

Afte a week, he started to complain. He said I always go out sightseeing without doing any helping work.
1 day, he said " If you clean the toilets of the whole boat , I will gave you 100 real(around
$25) "

My eyes started to sparkle.
I think : Why not? It is around a 2 hour work. For 25 dollar, it is a good deal.
At last it take me 3 hours to do it. a 3-storey  is about 8-9 toilet.
My clothes was all wet when I finished.
Actually I feel good, Now I know it is not easy about being a cargo ship crew.

After this , I went to the captain
"Where is my $25 ?"
He was laughing, the other crew laughed too.

I was shocked to see this.
But now I realized it is possible.
No worries, you do not have to reward me.
It is like a gift for you as hosting me for 2 weeks.

After that , I took another ship to Santa Rosa, Peru.
The day I left, he told me
"I feel so happy about your leaving. I hope not to see you again. "

The other crew and the cooking lady said to me "have a good trip."

I do not want to make up a story like everybody will welcome hitchhhiker.
But I do want to record the truth story.
Maybe the other locals think me in this way too, but they just did not express.
I would rather you being honest and not wasting time of anybody.