A useful enquiry is short enough for WhatsApp and detailed enough for a real answer. Start with the date window, group size, ages, swimming comfort and previous experience. Then name the goal for each person instead of saying only “family dive.”
Ask for the course or experience name, agency and instructor. Confirm the water format, meeting point, inclusions, equipment and boat arrangements. Request the total per-person price. Ask what remains separate. A reference price cannot answer those questions by itself.
Request the weather, illness, participant-change, cancellation and make-up terms before payment. Ask who decides whether conditions are suitable. Record the response in the family brief, then share it with every adult responsible for the children.
Finally, ask what happens if one participant stops. The strongest plan protects the learner without cancelling everyone automatically. It may separate the group, change the activity or end the session. The instructor should explain the safe option.
Use this closing message: “We are a family group of [number]. Ages are [ ]. Goals are [ ]. Experience is [ ]. Preferred dates are [ ]. Please confirm format, supervision, meeting point, inclusions, price and written weather terms.”