I went to see it earlier this week with my 23 y.o. son and both of us have it the nod of approval afterwards.
As others have also mentioned, I got the sense from trailers that it looked somewhat ’empty’ on the beach and maybe that’s where CGI could have helped with lines of troops in the distance.
Otherwise it was enjoyable. The effects and the hardware were impressive.
Trevor
(hello this is my first post here btw!)