Will friends and family be willing to sign model release forms?

One of the best ways to sell a photograph is to have somebody in it. In order to do this, the models in the images need to sign off their rights to collect any money for them. Often times, I will do a trade with friends and family. I’ll agree to bring my camera to so-and-so’s birthday party and photograph the event for them if one or three agree to give me an hour or two time around the house, at the park or wherever to pose and let me photograph them, and sign the release. This works out well for both parties.