Ive done all, gone with a quilt group, gone with a friend and gone myself. Selfishly I prefer going alone. I can choose my own path and speed, I eat when I want and where, I can look at quilts without comment or walk around stalls at things I'm interested in. Large groups have this meet up for lunch syndrome and friends can be very pressurising as to what they want to do.
Go go on your own and enjoy the experience, just DH drive you and you can ring for a driver when you are too exhausted to go on. Enjoy the show.