Once all the wall panels are screwed together and top bracing in place, the wall system will not move on concrete. As the walls square up to each other you will have the occasional hanging wall, to remedy this you have wooden shims and pound them under the walls to insure they have wieght on the floor.
Each wall single sided wieghs about 45 pounds, if double sided about 85 pounds and putting them together becomes one big multi ton mess. The absolute best is if it does fit your theme to have carpet lid down first and then walls. So many places you set up are not intended for construction to be done, putting nails or things into the floor, so you do it with weight. You also put props in areas and hand rails so the walls are not where 6 heavy framed customers do a rhino dive. Customers can become like the football defense line and so those particular areas you might even get crazy into 55 gallon plastic drums with water as weight or sand. The occasional raised stage that is also attatched to walls helps.
A heavy central corridor that everything is built off of adds to the structure.
The one point not mentioned is that the top 2x4 should go on top of the verticle lumber so it can carry weight of various things, from walking the walls to how the overhead bracing is attatched and does have some weight, cable bundles with lots of connections can become heavy. The bottom two horizontals can be inside the lumber.
Use screws instead of nails and figure out how these all attatch together properly.
Over head bracing is more than just a corner here and there, it may actually end up being an entire grid of lumber every 8 feet or less or totally free style but a lot more weight and amount than you would think. You literally go through and wiggle and test things once it is all up.
Another fabulous post from the U.S.Department of Wild Imaginings, now in spectaclar stereo, sponsored by the Adhesives and Sealants Council, suggesting ways to stick things together since the 1800s. Not fabulous in a gay way. Your results may vary. Illinois residents add 8% sales tax. These posts have been made by professional post makers, do not try this type of posting on your own without extensive training, lovely assistants and a trusty clown horn.