I don't have an issue attending both/either one, but I do agree that it will leave less impact on the Saturday event vs a weekday......
If many thousand show up, it will be THE news nationwide. If no other noticeable news happens, it will be easier to make an impact when most media is off for the weekend. If less than a hundred show, it looks weak in a lot of ways.
That said, an ND at the 1500 on meeting day could be bad publicity.