I haven't been to one of their classes but taking classes from someone with B&B experience is a great idea. The B&B Team has the experience in the sales, marketing and figuring out if a biz will be profitable, insurance, licensing, the 'business' side. Do they have guest speakers who will cover the day to day 'life of an innkeeper'?
I know you can get that here, but it helps to have someone show you rather than just read about it. Is the class held at a B&B? Do you have access to the innkeepers during the class? Will they be showing you around 'behind the scenes'?
The class we took was at a B&B and the innkeepers showed us what their day was like. We saw the rooms being cleaned, laundry being done, we got the whole nine yards from what time to get up to how to have your own life. They showed us their innkeeping quarters and gave good advice on making sure you do HAVE your own space and you're not sharing with guests. (Sick kid and you have to go thru the inn for ginger ale? Someone will be there wanting your attention when your kid needs you.)
Understand what kind of a B&B the speakers are running. We've had commentary by innkeepers who were solely the 'glam' part of the business. They did not do ANY of the grunt work. If you will be doing everything and not hiring out the dirty jobs, make sure you understand the POV of who is doing the classes.
Ex- if one of your speakers says they go out for lunch or yoga class or whatever everyday, you need to know who is doing the work while they are out.
Also understand that this is YOUR business and you'll end up adapting anything you hear and see to fit what works for you. (Ditto everything you read here.)