I saw the first show in Santa Clara and the last one in Chicago. Much better/more familiar crowd scene in Chicago which really surprised me.
Agree that the vocals were often "off" but overall the performances were great. They were obviously having a good time and had small jams at the end of most songs. I'm not a huge Phish fan but some kids around me who were said that those were some of the best moments for Trey. My friend who was with me HATES Phish and by the end of the 1st set on Sunday, she admitted he had won her over. The flubbed transitions and chords here and there were both expected and forgiven. Heard worse from Jerry in his final couple of years touring. Very funny moment when Bob Weir came onstage wearing a "Let Trey Sing" t-shirt. Throwback to the old days of "Let Phil (Lesh) Sing" and I'm guessing a FU and/or nod to the frustrated Phish fans.
Some of the complaints I heard were that they were TOO rehearsed and TOO polished. For me, hearing the songs that I love played in a familiar way (they never do anything the same way twice, no matter how rehearsed they are) was the payoff. No complaints on that front at all.
I loved that there were no ushers once we got inside. Nobody checking tickets to escort you to your seat. If you planted yourself somewhere and someone came along to claim the seat, you simply moved down a bit.

The cops and security people were very low profile. Saw a few tshirt vendors have items confiscated for trademark violation but that was it. Pot was openly enjoyed and most definitely ignored by all authority figures present.
I stayed clear of downtown and any of the other Dead happenings going on throughout the city on Friday and Saturday so I can't speak to those.
The worst part of all of it IMHO: Soldier Field ran out of beverages at the concession stands (at least in the upper levels) Sunday evening. No water, soda/pop or even beer. If you brought them a cup or bottle they would give you ice and you could get water in the bathroom but if you had nothing to hold the water, you were out of luck. I cannot understand this. SF has been the home of MANY hugely packed concerts and, you know, a few Bears games. As Sunday was the final show of the run, there was no excuse for them to be as unprepared as they were. In typical Deadhead fashion, there was no fuss. People were upset, voiced their displeasure and moved on. No big deal.
A nice aside: whenever someone asked me where I was from (very common at a Dead show) and learned I lived a few miles from Soldier Field, I was inevitably told what I great city I live in and how much everyone was enjoying their time here. That was fun.
DM