While that can be interesting and entertaining, seldom are their issues, needs and concerns the same as yours. Having your whole team in the course will create focus and discussion on the issues that are important to your organization. Everyone must agree on the issues and what is needed to solve them. Getting a good start on this agreement is important to provide the momentum needed to implement strategy for change. This momentum can only be provided if a large percentage of your employees share the training experience.
Every business organization has strengths and weaknesses, threats and opportunities.
The public seminar must be, by definition, generic. In house training can be designed to focus on the issues critical to your business. Your time will not be wasted on topics that have no relevance to your business. The focus is on you and your organization. The timetable belongs to the seminar provider, not you.