The area was abandoned and there were no people there. That is why these people do such dealings in a place like this to avoid getting caught.
Jimmy and Megan reached the place ten minutes earlier than Ronald and after hiding their bike safely they too hid themselves in the bushes.
Jimmy, already using his contacts, informed the drug dealer to not go there today as there is something wrong with Ronald. Jimmy was after all a Morris so he was able to manipulate things like this and the drug dealer taking the tip he received seriously decided to not show up at the decided location.
After ten minutes, as expected Ronald was there, Megan again got angry when she saw him as he looked absolutely fine and she realized this break up didn't affect him in any way and he is still enjoying his life his way.
"Megan, get a hold on your emotions." Jimmy warned her and she tried to control herself.