And the verdict? While some said it was clunky in parts, most loved it - describing the movie as fun, epic and "a blast".
There was particular praise for Fleabag star Phoebe Waller-Bridge, in her role as droid L3-37.
Solo is about the early years of the sci-fi saga's Han Solo, played by Harrison Ford in the original films.
Alden Ehrenreich takes over the controls of the Millennium Falcon in the new spin-off, heading up a cast that also includes Donald Glover, Emilia Clarke, Thandie Newton and Woody Harrelson.
The film, directed by Ron Howard after the original directors left mid-production, sees Solo beginning his pilot training and seeking a spaceship of his own.
'Makes your heart happy' Writer and producer Adam Goldberg says it "delivers in every way".
"Funny, suspenseful, emotional, a truly epic origin story," he raves. "If this film doesn't make your heart happy, then just give up on watching movies."
Perri Nemiroff of Collider said there was "fun to be had", praising Donald Glover and Waller-Bridge, but admitted she was hoping for "more energy and depth" from the film.
Yahoo Entertainment senior correspondent Kevin Polowy also had a lot of time for Waller-Bridge, saying L3 might be his favourite new character.
He described it as "a straight intergalactic heist movie", with Ehrenreich "super impressive as Han".
David Daniel said it "hits the beats it needs to, provides plenty of flying and fighting action, and especially delivers on the Han-Chewie relationship".
He adds that Glover is "as cool as expected" and that Waller-Bridge is "an absolute delight".
Wendy Lee Szany was less enthused - saying there were "great moments but some were a bit too on the nose". She especially likes "the Chewie/Han bromance".
Joel Meares said Solo is "kinda a blast", adding that Glover was "perfect as expected" and Ehrenreich "has swagger to match, and spare". And Waller-Bridge? She's an "utter scene stealer".
"Foot heavy on the nostalgia pedal, bit of a rough opening, but could not wipe smirk off my face for most of it," he said.
Jacki Jing said she was "completely floored" by Solo, saying it had her on the edge of her seat.
Film blogger John Campea said Solo was "pure wonderful adventure" and a "true summer adventure".
"Not best film of the year or anything, but prepare to have a really good time," he said.