Trying to finish, but......

it really irks me when characters behave in a way outside of what we know of the character.

For example, Piper, though impulsive, is supposedly a highly intelligent woman, so for her to consume cannabis and alcohol while KNOWING she is tested for alcohol and drugs is bullshit even though her brother tells her Visine will mask the tests.

Come on! A simple google search would have blown that myth out of the water. What would have made sense would have been if she had someway consumed such an edible by accident or mistake.

And I get that she wanted a "day off" but creators need to be creative enough to write a scenario that is believable or genuine to the character or create a genuine circumstance for the unbelievable to occur.