I suspect the first day of practice (October 14th, a Friday) possibly could have incentives (raffles, food, or something) to encourage fans to show up. Also probably schedule it a 7 or so, enough time for people to get off work and for students to be out of class. It seems like the natural thing to do.
I doubt there will be any big pageantry for it, as OU doesn't have a big enough fan base to pull it off.
I hope they do a scrimmage again, the problem is they have to compete with Volleyball for the field house and they often try to piggie back off football games as well. Plus since the times for football games aren't often set until a week or two before that is also a scheduling issue.