Let people save a copy of their answers
Add “Save a copy of your answers” to the ending: a printable page, with nothing emailed.
Every plan
Turn on Let people save a copy of their answers in Share → Settings. The ending shows Save a copy of your answers, which opens a printable page they can save as a PDF.
Nothing is sent anywhere, so it works on every plan and needs no email address. Bookings always get calendar links on the ending, with or without it.