A step down from the 2010 film, but 'Alice Through the Looking Glass' is a solid film nonetheless.
I enjoyed seeing this plot, largely about time, play out. The film is CGI heavy, but does look great for the vast majority. The cast are good, with Mia Wasikowska leading well and surrounded by the likes of Johnny Depp, Anne Hathaway, Helena Bonham Carter and Sacha Baron Cohen.
I do think the film could've been slightly shorter, with better pacing and less emphasis on the 'real world' stuff featuring Alice. The looking glass entry isn't as interesting/magical as the rabbit hole, also.
Far superior to the 1998 adaptation of this 1871 Lewis Carroll novel, that's for certain.