THEME: AL added to first word of a phrase yields a different one
GOOD ONES: Mail carrier's romantic activities? POSTAL-DATING
Collage of potpourri bits? PETAL-PROJECT
It's a lock YALE [manufacturer]
You can get down from them EIDERS
Numbers that aren't programmed ENCORES
Page with some right angles? OPED [conservative opinions]
BTW: Peg must be in love with Al because along with the theme words there are five other AL's hidden in this puzzle. (Or she's a big American League baseball fan.) She could've had another AL if at 66-Across she used OPAL. MON = Monday or " ___ Oncle"; APA = Am. Psychiatric Assn.; RAV = sporty car "___-4."
Spicy
condiment SALSA [it's more a sauce than a condiment --- I'd go with "tomato sauce"]
RATING:

Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun