I have made two different versions of my Twilight saves. 

From now on, I will not be updating my non-My Wedding Stories saves.

In the "Tartosa" versions:

1. Volterra is now the Tartosa world
2.  The Volturi lot is in Tartosa so now the coven/guard live in Tartosa
3. Gianna (the human Volturi assistant) now lives in Tartosa
4. (in Bk.4) Bella and Edward have a new Wedding event where Alice and Rosalie are the Sims of Honor and Angela Weber's dad is the officiant
5. There will be a First Dance, Dancing, Toasts, Aisle Walking, Vow Exchanges, and First Kiss in the BellaxEdward wedding
6. (in Bk.4) the wedding space on the Cullen Manor now has the My Wedding Stories objects instead of the ones before
7. (in Bk.4) Bella will have a Family Gathering Event the day before the Wedding event (you can't have two events in the same day in the Sims 4)
8. (in Bk.4) Bella and Edward now have a Reception event the day after the Wedding Event