Well I was able to see this one thanks to a Vendor showing this am. And am going to see it again tonight with my Wife.
All I am going to say is if you like the first one in any way, you should like the second one as well. I laughed, I got emotional, and I got my money's worth (I bought the tickets for tonight :P ). I highly recommend both movies and definitely cannot wait for Vol 3!
I'm going Saturday with mom, it should be good. I haven't really seen any trailers beyond the teaser that was in front of Star Trek last summer
FYI Pay attention to the "I AM GROOT" text in the credits as they flip to other things as it rolls by, and stick around for the 5 after movie credit scenes.