I think the pros and cons depend on your family. did they say why they want you to bring them?
I recently brought my husband to Therapy, which was a 1 time deal - I think it was helpful for him to hear from someone else tell him certain things about me, like that i'm extra sensitive and obsess and need a lot of reassurance...
When I was in the hospital my parents came to hear from the drs about my treatment or prognosis.

but if you think it will be a problem, you know your family....