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Sometimes you see a bit more organic (in terms of people just naturally linking to things) indexation of content if pages are dynamically generated by a user selecting the amenity, location, etc, and then the database creates the page on the fly and then someone links to that.  Still it's nice to have a bit more control over page URLs  and give them a bit more established, static presence ahead of time. I wouldn't worry about their release in regards to amount.  Just make sure they function, have sitemaps indicating the new content, and try to drum up a press blitz on the new amount of pages in social and conventional space. Google does well with large increases if it sees a correlated increase in search or press.