You’ll Trip on that Runner
I rarely see aisle runners work well at a weddings.
You don’t want it out while seating guests incase they kick it out of place or get it dirty. You could have some uncles roll it out right before you walk down the aisle, but are you giving them a time to practice? Some aisle runners are hard to unroll; you don’t want all the attention on them as they struggle to lay it out.
Aisle runners use to protect the bride’s dress from floors muddied by guests. Since this is no longer a real issue, one solution is to not use an aisle runner at all.
An alternative is to rely only on flower pedals, but will the flower girl just throw clumps and not spread the flowers out evenly? Can you give her good instruction and time to practice? Nice lanterns or flowers at the end of the pews often look nice.
If really wanting to use an aisle runner, I’ve seen brides block off the main aisle so guests must walk up the side aisles instead. To block of the aisle, they used a nice sign welcoming guests, surrounded by flowers.