My parents have been doing this for a few years now; it seems to have changed them, in a good way. I just couldn't imagine waking up at 3 AM to do it, like they do! LOL I guess that' was the only times available. Still though, that's dedication!
Good for your parents! That is indeed dedication.
I just moved to a new city, and one of the reasons I chose the parish I'm not attending is because they have a day of adoration every Tuesday, starting after morning Mass and ending with Benediction at eleven PM. I think it really makes a palpable and positive difference when a parish truly centers around the Blessed Sacrament.
God bless your parents! That is love of the Blessed Sacrament and Jesus present in it!