I re-edited this post I wrote few years ago:
1) How many guests
2) Will I pay for their accomodation?
3)Will I have a 3 days party?
4) Will I have a symbolic, civil or religiuos ceremony?
5) Formal or informal?
6) Castles or farmhouse, villas or restaurants?
7) How much wil I spend for details, decoration, flowers etc etc
If you probably have 50-60 guests and you will pay for at least two nights accomodation you should be aware that your budget cannot be less than 30000 euro.
Just for your information: Castle and villas require a rent to pay around 4000/6000 euro
Catering starts from 100,00 euro plus vat per person (vat for food is 10%)
Paying more does not mean to have a better wedding, believe me! Feel free to ask me a quotation to firstname.lastname@example.org or fill up a form
High season in Tuscany goes from April until end of October