ok, not a partial answer, but obviously I don't know if all are correct
they are all B&A before and afters
Number one
monkey business card - monkey (macaque) business and business card
Number two
Thanks to Stiv and the OP for spoon feeding this:
reverse alphabetic order of magnitude - reverse alphabetic order (the jumble) and order of magnitude (magnitude is anagrammed)
my wrong answer -- mixed up size - mixed up (anagram) and up size (magnitude is anagrammed)
Number three
cloud nine to five - cloud nine and nine to five (arrow)
Number four
rot 13 colonies - rot 13 (used to encrypt) 13 colonies, the original US
Number five
six feet under the sun - six feet (shown) under and under the sun
False trails...
six feet deep tan - six feet (shown) deep and deep tan (on legs)
black and white sandy beach --black and white (pic) and white sandy beach
out of line of the horizon -- out of line (the one person who is different) and line of the horizon (where sky meets water)
Number six
red square root - red (color) square and square root symbol