No formal dress code. But, as you might expect, always best to present your best appearance.
There is a sign on the door(s) prohibiting firearms in the building - unless you obtain permission from the bldg director. Although they used to grant permission somewhat freely, they no longer do, unless you're law enforcement.
The purpose is to hear pro and con arguments and determine if the committee will pass the bill to the Assembly floor for a full vote. Although testimony may be limited due to time factors, 99% of the time you'll be allowed to testify before the committee. When you arrive, simply sign in, check the box "in favor" and check the box stating you would like to speak.
Even if many have presented favorable testimony before your turn, its STILL best to get up there and testify in favor. If all your points have been previously made, you can simply state, "I'll be brief as I agree with the previous favorable testimony and urge you to pass SB-231." Tell them your opinion and urge passage! Tell them this is fine legislation, thanks to Senators Lee and Settelmeyer for sponsoring it, and SB-231 is 100% worthy of a full vote on the Assembly floor - Nevadans deserve to see a full vote.
HUGELY important.
If SB-231 doesn't get passed out of committee to the Assembly floor, the bill will die.
P. S. Folks in Clark County can easily participate. Hearing is videotelecast to the Grant Sawyer Bldg. You can easily testify from there!