The short answer
Five questions, at nearly every venue: adult supervision, allergies, invitations, what to bring and arrival time. An FAQ page that answers those clearly removes most of the calls you take on a Saturday, and removes the reason a parent hesitates before paying a deposit.
Why these five and not others
A parent booking a party is arranging an event for twenty other people's children in a building she has probably never entered. Her questions are not about your play frame. They are about whether the afternoon will go smoothly and whether the children will be safe.
Package tables do not answer any of that. That is why venues with a strong FAQ take fewer calls and lose fewer bookings between the price page and the deposit.
Adult supervision
Say how many adults you expect a party to bring, whether parents are required to stay, how many of your staff are with the children, and what your party host actually does during the two hours.
Then say plainly who is responsible for the children. Parents want to know this and almost never ask it directly, which is exactly why it belongs in writing. If your policy is that parents remain responsible while your host runs the party, say that in one sentence rather than leaving it to be discovered.
Add what you hold: first aid trained staff on site, your public liability position, and any staff vetting you carry out, described accurately rather than aspirationally.
Allergies
Tell the parent where the allergen information for each menu item lives, how to declare an allergy, by when, and who to speak to about a severe one.
Allergen rules differ by country, but the direction is the same everywhere: the information about what is in the food has to be accurate and available to the person ordering. Keep an allergens page from your supplier specifications rather than memory, make the dietary question required in the booking flow, and confirm your own wording with your local food safety authority if you are unsure.
Invitations
Whether you provide them, whether they can be downloaded from your site, and what should go on them.
A printable invitation with your address, arrival time and the finish time on it is a small thing that prevents a great deal of confusion, and it puts your venue name in twenty other households. Say whether guests need to be listed in advance and by when.
What to bring
Be specific and be short. Socks for soft play, a change of clothes, the cake if you do not supply one, candles and matches, and anything else you expect.
Socks are the single most common thing a party arrives without, so it is worth them appearing three times: on the FAQ, in the confirmation and in the reminder.
Say what you supply as well, because parents buy things they did not need to. Plates, cups, tablecloths, a cake knife, a candle lighter and a music setup are all worth naming.
Arrival time
How early the parent should arrive, where to park, which door, whether the room will be set up before guests arrive, and what time everything finishes.
Give the finish time as a real time, including the clearing up. A parent who thinks the party ends at two and finds she has to be out at two is the one who leaves an unhappy review.
Where the answers go
Not just on an FAQ page. Link the page from the package table, from directly above the booking widget and from the confirmation email, with anchor text naming the question where you can.
Put the two or three most urgent answers inline on the booking page itself. A parent one tap from paying should not have to leave the flow to find out whether socks are required.
Keep it current
Every time somebody rings with a question the page should have answered, the answer is either missing or badly worded. Fix it the same week. Twice a year, read the whole page against how the venue actually runs, because party lengths, minimum numbers and menus drift and parents will hold you to the old wording.
Where this sits
An FAQ built from the questions your own phone actually receives, linked from the package table and the booking flow, is part of a children's party venue website as we build it, and the same trust pattern runs through our other childcare and family websites. The packages are on pricing. Answer the anxious questions and the deposit follows.