I have never attended a RE training seminar but I have read enough on BP to distill a few cautionary principles to keep in mind :
1. The person who introduces themselves as your adviser, coordinator, group leader or consultant is a salesperson. They are not there to give you knowledge, they are there to get your money. Use the same filters and barriers you would use if approached by a salesperson in a car dealership or the appliance section of a retail outlet.
2. Never give out financial information or identity metrics at one of these events. See point # 1. You have no idea where your information could end up.
3. Just because a seminar is named after or endorsed by a celebrity does not mean the methods being touted are the ones used by said celebrity. It just means they paid to use the name/reputation.
4. If you find yourself tempted to purchase additional levels of training remember that the "special, limited, early-bird, one-time" offer is going to be heavily discounted by the end of the seminar. Do not be among the first sheep to flock to the sign-up table. You may not avoid being fleeced but you might avoid slaughter.
5. You may have to dig for this information but if you find that the sponsoring organization is based in Utah walk away. I am sure there are many fine businesses in that state but it seems to be the cesspool that breeds most of these GuruFests.