How do they do it?

I'm passionate about music and enjoy all kinds of music.  One group I enjoy is Celtic Woman.  I've always been fascinated with Celtic history and music especially since I performed with the Kilties Sr. drum & bugle corps in 2001 and 2003.  I saw the latest YouTube video of the Celtic Woman ladies and in it they say that they do read all of their tweets and posts on Facebook.  This puzzles me actually.  Going from my experience as a musical performer, especially in tour (drum corps), when would one have time to read thousands of tweets and posts?  I know what it take to prepare for a performance, and it does eat up very much time.  A daily agenda can be filled with much time in practice / rehearsal, then getting ready for the show, perform the show, then loading up/packing up and heading to the next town.  At least in my experience, the road time was usually at night so us members usually were getting some sleep while on the road.  I suppose you could read tweets and such while on the road.  Still, with thousands and thousands of tweets and Facebook posts...how can all of them be read, let alone replied to???