I fell asleep and then had a mega busy day in work. 🤣 But I'm here with my ex wedding planner knowledge lol because I'm bored.
Re the tights, we would often recommend flower girls have tights or pretty ankle socks, stops them complaining about the very tight formal shoes all day.
These aren't shoes they have "worn in" they are sometimes stiff leather, and they can rub. Children's feet come in all shapes and sizes width wise also, but the shoes don't. So anyone like myself who has a child with a wider foot than average are often met with cries of "no, they are too tight" by small children.
You also have the fact kids like to bend over a lot and unless you want your child's bloomers regularly on display a gusseted tight can offer some modesty.
Winter/spring weddings thick white/ivory, summer early autumn thin white/ivory or laced top ankle socks.
Kids are often more difficult to dress and keep happy than the adults. Though I have witnessed groomsmen argue about kilts that nearly came to fisticuffs 🤣 and adult women argue about spaghetti straps that ended in tears also 😬