You could ask ride manager what kind of footing to expect and if they recommend hoof protection, they should know.
If footing is same as home and your horse is used to ride that distance at that speed, you might not need anything.
If the footing demands protection, you should use the boots before the actual ride. Never a good idea to experiment on ride-day!
I use mainly Easyboot Gloves. They are light and easy to put on and off. BUT, they need to fit perfectly to stay on. The Epic model, as mentioned, is more forgiving and adjustable, but more tricky to put on. Both models have a gaiter that can potentially rub some horses, so it can help putting some kind of lubricant like BodyGlide, Showsheen or Chamois cream (sports stores for cycling).
Then, Renegades, original model or Viper. Easy to put on-off, colorful, big and clunky, expensive, usually easy to fit, hard to lose (it happens, in any boot).
Choice will depend on the shape of your horses hooves, your budget and personal preferences.