So whilst we aren’t advocates for fixing in post, the RAW format just generally gives greater flexibility in post-production. You get a lot more control over things like white balance, exposure and shadow recovery than you would with a jpeg file. This is particularly helpful with weddings as the lighting is unchangeable (unless you use flash). The ability to manipulate these features after the fact is a great help to most wedding photographers.
When styling a photo session, I like to start out with a basic color palette and go from there. It can help to have one “rock star” in the photos who carries a pattern in their outfit that the rest of the group’s clothing or accessories pulls from, while keeping everyone else’s outfits more simple. You can do this with a neutral and a few colorful brights, or try a softer palette that has different tonal ranges of the same shades.