I don't really know how much I have to say about this but I'm pretty sure it's more than will fit on twitter.
I liked it. I liked it a lot. I'm sure it has problems but they didn't bother me and so I'm trying to just enjoy having seen it for now and not think about whatever issues it has. Maybe later I'll get analytical about it, but not yet.
I did say this part on Twitter but I'll repeat it here: Chris Pratt's character is sort of a, well, prat, there's no denying that. But it seemed to me that he was mostly stuck in time as the 10-year-old kid he was when he left Earth. And he does appear to mature, during the events of the movie, so I can deal with that. "Man-boy" as a character is only tolerable to me if they make some progress towards getting out of that as a steady state. Your mileage may vary.
It was written (at least primarily) by a woman, so that probably helped, from my point of view. (From what I read, she wrote the original script; she got co-writing credit with the director and we don't really know how many other people may have made changes to it, but still, she's the first woman to get a writing credit at all in one of the Marvel movies, so hey, progress.) There were what, three main female characters, two of whom - Glenn Close and Karen Gillan, that is - didn't really have that much to do. But Zoe kind of made up for that, to me.
We came in late and had to sit in front (well, 3 rows back), which is what we usually do anyway. The theater wasn't completely full, late on Sunday afternoon, but it was pretty full. And they were into it. I noticed right at the end that you could hear a pin drop, at one point. And there were a lot of kids there, so I'm always impressed when the kids are quiet. I looked back in the middle of the end credits and it didn't look to me like a soul had left. Marvel's got people trained, there. (I said outright on Twitter last night who the "surprise guest" was at the end - I don't know if I pissed anybody off but I will refrain from doing it here, anyway. SLIGHTLY SPOILERY COMMENTS ON THAT: I know some people are much more fond of that character than I am - and in fact, I had forgotten that he was a Marvel character at all. As long as they don't give him another movie, his presence there as a one-off thing was alright, if very random.)