I know there are oodles of books out there on how to write a play, but I'd like a personal touch from other community thespians. 

Just some suggestions/opinions I hope might be helpful.

Comedy is often harder to write than non-comedy (or drama, if you prefer), because everyone has different tastes in the humour they appreciate.  This is why it is most important that YOU like it and think it's a good (or at least adequate) comedy.

FIRST AND FOREMOST write your play so that YOU like it, and YOU would like to see it on the stage. 

Be a bit brutal on yourself - that is: 
- If you heard (or spoke) those lines on stage, would you think they were good, okay, or lame? 
- If you saw actors do those actions on stage, would you think they were good, okay, or lame?

For test readings:
The more of the play you have a completed draft for, the better your "test readings" will go. 
Completed draft scenes should be a minimum unit to have people read, at least at the start; completed draft acts or the completed draft play can be worked up to.

While great characters and/or great dialogue will always be well received, make sure that your play "makes sense". 
No plot holes. 
Unless your play is experimental, a standard play structure (exposition, development, climax, denouement; preferably in that order) is essential.  (I was involved in the workshopping of a new play in which the climactic event took place in the very first scene, making the rest of the play essentially denouement; it made the whole play seem tedious.)

Can you describe "what your play is about" (not the plot outline, but the theme or the moral or the point) in ONE SIMPLE sentence?
If so, does it sound like an interesting play to you?  To your trusted friends?  To complete strangers?