Not sure about your ramifications for disclosure, but they should be spelled out in the contract.
The only comparable shooting I've done was contract work in locked down high security industrial sites, wherein I was "badged," as were each of my camera bodies. Badge myself and my cameras through each gate or security door, then badge me and the bodies back out again. Perhaps a dozen times a day. At the end of each day I handed my chips to the security director who downloaded them to their computer system, then erased the chips. Both I and my camera equipment were subject to search before departing the facility. Couldn't talk about what I saw (still can't), and I certainly couldn't use any of the photos, so in effect an NDA.
I pumped my hourly rates (actually doubled them), and since they never seemed to be in any hurry from setting to setting or in prepping the shots, I wasn't going to rush them. It was all on them to be ready for the shots, so I spent probably 50% of each day standing around or riding. In effect I was getting quad shooting rate. Worked for me! They liked my work and my willingness to cooperate with all security arrangements, so it turned into a lot of shooting over the years. Yeah, I'd even come out of retirement to work for them again.