OR EVEN FOR VETERANS TO BRUSH UP
I am a recent (less than a year that I created my company) caterer from Spain. I have found Denise's information very well structured with many tips (checklists, real examples, concrete answers to common errors, etc) and many references for further reading (websites, books, etc).
It is true that part of the information is US specific (for example rules and regulations on alcohol serving, legal aspects of the catering business, etc) but it is also useful to know.
It touches every aspect of catering - from writing a business plan, to marketing, setting prices, etc - in a simple yet comprehensive manner. I have not heard of Denise Vivaldo before but reading her book I can tell you that it gives you many concrete action items that can be applied to your catering and improve it (for example a Quality and Service Report to send to clients after the party).