I don't have time to write the long review I'm most likely going to give this so I'm just going to quickly share my thoughs.
*Ahem*
It was fun. Very messy and insanely flawed. I'd say Chibnall dropped the ball in the writing department, but I don't think he even really tried to make it cohesive at all here. I think his only intent was non-stop fan service and entertainment and it actually kinda worked for the most part. He basically gave us the most Chris Chibnall story of all time and I found myself actually laughing with him, not at him. This is as self aware as he gets, and I enjoyed it. Really loved seeing everyone (especially Paul) and was shocked at how much I smiled when Graham showed up. This is nowhere near as good 'The Parting of the Ways', 'The End of Time' or 'The Time of the Doctor', but I enjoyed it more than 'Twice Upon A Time' because at least this tried to have fun and knew what it was. 7/10, I enjoyed it.