Will my own white label booking website actually show up on Google, or will nobody ever find it?

Yes, your customers can find your white label site on Google, but usually not through the live search results pages. Those pages are built the moment somebody searches, so search engines do not read and store them the way they store an ordinary page. What gets you found is the content around the booking engine, which means the site needs real pages of its own and not only a search box.

The other thing to be honest about is the supplier content. Hotel names, photos and descriptions normally come from the same feeds that many other travel sites use, so a page made only of that text looks like a copy of hundreds of others and search engines rarely reward it. Anything you write yourself, a guide to a destination you know well, a page explaining a package you have put together, an answer to a question your customers keep asking, is what separates your site from the next one.

How the site is set up matters too. If the booking engine sits on your own domain, everything it earns counts towards your own name, while a setup that puts it on a separate address builds that value somewhere else. Whether you can edit page titles, descriptions and wording yourself depends on your plan and on how much of the site is handed over to you.

Before you sign anything, ask to see the site running on your own domain, check that you can add and edit your own pages without going back to anybody each time, and search for a site of the same kind that is already live so you can see for yourself what turns up.