I start my pre-op diet tomorrow. Surgery on 30 March. Technically I didn't have to start until Thursday 9th, but I like to start a week off fresh. I've joined the Facebook group as well.
30 March still feels ages away for me, but I start my pre-op liquid diet on March 10, so it will all start getting real pretty quickly! I just want to get it done. I'm 43 and very ready.
I've seen error codes on pics as well. Especially from older posts in the before and after pics threads. Example in screenshot below (which I hope doesn't scale too large!)