Please note that for Spring and Summer the BEST thing you can do is stick to NEAUTRAL outfits. Beige, Pale Blue, White, with maybe 1 or 2 people being in pops of darker colors. But with the shades of nature being bright, you don’t want to look too harsh.
As with anytime of year…AVOID PATTERNS. If someone in the family is dead set on flannel…well be very careful. Just one person in pattern is usually fine if everyone else stays very neutral. But for the most part the calmer the outfit, the better!