Any differences between Final and the Beta/Alpha
There are a few, and you should probably replay. Although, careful use of the console could be faster if you're comfortable with it.
Most of the changes are cosmetic and fixing typos. However, Eva changed some variable tests in the Cindy and Lena dates. Even so, chances are you're still okay. (if you did the Cindy date, your max score with Cindy should be 10. If you're that or under, you're fine. In the Lena date, if Lena is not posh and you took her to the cocktail bar or if she is posh and you took her to the local bar, you might have a lower score with her.) I actually think one of these changes could be a bug (line 7067 if anybody has Eva's ear and wants to ask her to have a second look to make sure it's behaving as intended. It doesn't look to me like the test as written will ever possibly be evaluated as true, but my renpy syntax isn't strong so I could be reading it wrong.)
The biggest change is that she added 4 new variables to the Perry's family dinner at Lena's restuarant scene. Looks like these variables determine whether this scene is mentioned in Ian and Lena's agendas. The variables are: lena_mayor_agenda, ian_mayor_agenda, lena_mayorswife_agenda, ian_mayorswife_agenda. They are all set to True at the point where Lena finds out who Perry's parents are.
I think that's it!
EDIT: For clarification, these are differences between Beta and Final.