Still though, somebody could delete all the movies and showtimes in a couple of clicks. I presume you have the JSON backed up but it's still going to get annoying if somebody decides they want to be a dick.
true [backs up data]. the system will also auto-recover by falling back to the RT/YT/YQL APIs if someone does that, though pages will load significantly slower and Rotten Tomatoes will throw a bunch of rate-limiting errors until Firebase is repopulated.