mmmm
I dont think anyones gonna be bothering about you with shrooms, and they are probably more of a hippy or travellers thing than something most locals would know about or even care about. I just got back from Iquitos and the hippies there were trying to sell me all kinds of overpriced junk including shrooms. It made me laugh because theres Ayahuasca and Cacti everywhere, and theyre both legal to use, dirt cheap, and respected medicines.....
Just dont try travelling on aeroplanes with shrooms or crossing borders, thats all id say.
"Eat your vegetables and do as you're told, or you won't be going to the funfair!"