Been to every BLADE since it came to Atlanta - even took leave for it while in the Army.
Suggestions:
1) Plan ahead - it's a good idea to have a rough idea of things you want to see/do. It's a bit overwhelming when you step into the show & see row upon row of knife makers, production companies, and gear vendors. Easy to lose track and forget stuff from sensory overload. As you are waiting in line to get in there will be tables with free maps & the current BLADE magazine.
2) Comfortable shoes & clothes - be prepared for a lot of walking & standing around.
3) A small pack or messenger bag - comes in handy to carry stuff like catalogs, new purchases, knives you might be trying to sell or trade.
4) Water. - it can get warm in there with all the people. Standing in line for a drink takes away time & money that can be spent on knives.
5) Cash - while there are ATM machines outside the show floor, they tend to run out of cash fast. Most of the people selling stuff are not set up for credit cards/ATM cards.
6) Socialize - while I do enjoy seeing the knives, I love getting together with people I know through the various knife forums more. Lots of good times have been had after the show over food & drinks while comparing new knife purchases, and swapping stories.