I am not an attorney. We are assuming these are pictures
you have taken yourself; therefore, you own any current/future
copyrights to those pictures. If you do not have copyright
ownership, you need permission from the owner, plus you
may need to determine if the copyright owner has signed
Unlimited Use Releases from the persons in the pictures.
An attorney, who has experience/knowledge, may refute/expand
on the following quote taken from Chapter 12 - Releases, in the
book "Getting Permission: How to License & Clear Copyrighted
Materials Online & Off" by Attorney Richard Stim, which is
available for purchase at
http://www.nolo.com .
"Although the right of publicity is commonly associated with
celebrities, every person, regardless of how famous, has a
right to prevent unauthorized use of their name or image to
sell products. The right of publicity extends beyond the
commercial use of a person's name or image to protect the
person from any implication that they individually endorse
a product."
I am not sure "None of the people pictured here endorse
the products sold" eliminates "any implication" that they
individually endorse a product. An attorney on this forum
may be unwilling to give you an unqualified "yes" or "no"
to your question.
What pictures are you planning to use; i.e., do they contain
pictures of well known individuals, or do they simply contain
dance poses or _____ you like? If you know all of the
individuals, you might contact a professional photographer
for further information and/or ask for a sample "Limited
Personal Release Agreement" form, where an example can
also be found in the above book. If you do not know all
of the individuals, you can hire a professional photographer,
and/or take similar photographs, provided the original
pictures you are wanting to simulate are not too artistic in
nature; i.e., simple photographs rather than photographs
that appear more like unique artwork done with photo
editing software, etc.