"You eating with us, Dawn, or are you having a Chinese?"
Bwa-ha-ha-ha-ha 
I really enjoyed it, though had issues with a few bits - the tone of the stripper scene felt off, I would have completely agreed with Sonia and her friends but I'm not sure what the writers were going for there? Why would Stacey have arranged a stripper in the first place when she's not a close friend of the bride? And why on earth would Pam, Dawn and Gwen have been invited to the hen party? Your fiancé's best friend's mother-in-law?!
I'm also not a big fan of the 'wedding being interrupted and called off at the last minute' trope, mainly because of how truly awful it would be for the jilted person and their family. It was done once at the end of the series with Nessa and Dave's wedding and it worked well - I think trying to repeat it was a step too far.
On Sonia - she's not very nice, and definitely not right for Smithy, but I liked that they didn't make her an out-and-out villain. I especially appreciated that she was portrayed as being 100% welcoming of Neil the Baby, and being genuinely touched by his singing at the wedding - Smithy, for all his faults, would never have married someone who wasn't on board with him being an involved and present father, so I was glad that they avoided the wicked stepmother trope here.
I really welled up at Mick's speech at the stag - how he and Pam had struggled for years to have another child, and how their family always felt a bit incomplete until Smithy came along. Mick has always been one of the best characters, and he's a really good male role model, I think - always calm and willing to give people the benefit of the doubt, and never afraid to show affection. Love him. Pam's description of her second chance at life after his untimely death was priceless.
I had no problem with Gwen and Dave Coaches getting together - he was never a terrible person, and Gwen seemed really happy.
Smithy has been the heart of the show the whole way along, and acting-wise JC really nailed it. Though was internally shouting at him at the end to just get down on one knee and ask her, you dozy twat.
All in all I loved it, I did.