Six of the nine, and one of them is not even a question. Guests do not read an FAQ to find the dress code; they look for the dress code, fail to find it, and then read the FAQ as a last resort before messaging you. An answer filed under a heading nobody is looking for is a hidden answer, and folding two thirds of these nine answers into one grey block at the bottom of the page undoes the work of writing them.
Six of the nine have a section of their own: Where to stay, Getting there — which is built for directions, shuttle times and parking at once — Dress code, Gifts, Children, and the Order of the day carrying your timings. Each is a place a guest can aim at, and each keeps the fact in exactly one location, which is the only reliable way to stop two versions of a shuttle time existing. Five of those six leave the FAQ completely; the Order of the day is the one exception, because the arrival time is worth repeating as an FAQ entry and nothing else on the page is.
Food is the sixth to leave, and it is not a question at all. Dietary requirements, a meal choice and a coach seat are fields on the reply form, so they arrive as a list rather than as a conversation, and the online RSVP page covers what the form can collect. That leaves the FAQ holding four entries: two of the nine — plus-ones and the wet-weather plan — the arrival time repeated on purpose, and whatever is peculiar to your wedding, such as a dry venue, a dress code with a cultural expectation behind it, or a ceremony guests have not been to the like of before.
Four to six entries, in other words, which is also what fits on a phone screen without scrolling past the first two. Our checklist of what to include files children, parking and gifts under the FAQ, and on a page that has no section for them that is still the better answer — an answer in an awkward place beats no answer. The rule here is the narrower one: wherever the design already ships the section, the section wins. And if your FAQ is longer than six entries, the fix is almost never editing it down — it is moving three of the answers up into sections of their own.