Should my domain open my landing page or my booking page?

You choose in Settings > Domain, after the domain is connected.

• My landing page is your full website: photos, about, packages and contact.
• A booking page shows just your packages to pick from, then the usual booking and checkout. This suits a domain you use only for booking, for example when your main website is somewhere else.

Either way, the booking page is always also at your-domain/book/ and the landing page at your-domain/home/.