If you visit the training section of the runDisney website, you can download the training schedule for 10k & above for each race event into your calendar. For a non-runner, recommendation for training for a 10k is about 15-16 weeks prior to race day. The nice thing about Galloway's training schedule is 2 days of running that is just time (30 minutes) and then one day of long run (distance) over the weeks of training. This is so that a couple of weeks before race day, you've had at least 2 runs that are the distance of the race - at least that's the training schedule for the 10k. I used the 10k training schedule for a 5k and just didn't go past 4 miles on the long run day. And make sure to have a day of nothing to recover. This is my training schedule: Monday gym, Tuesday 30 minute run, Wednesday gym, Thursday 30 minute run, Friday gym, Saturday long run, Sunday rest. My gym days are with a trainer, so they are arms, back, shoulders, chest, core and legs, all with weights (strength).
Take it easy the first couple of weeks with the run/walk run, like run 30 seconds, walk 30 seconds, run 30 seconds. It's all laid out in his training.
And the minimum pace is 16 mm. I just ran the Princess 5k last Friday and didn't notice anyone monitoring pace, since the 5ks aren't timed races. I did notice a lot of "runners" who aren't in, well, running shape and they were just briskly walking. Given the popularity of half and full marathons, I think 5ks have become a fun run.
Good luck!