Good advice above, above all pack light and bring extra cash. There is no getting around the fact that tips are really part of the true cost and not optional if you want to be socially acceptable. You can thank USA tipping culture for that fact. Hunting camp staff are normally not paid very much for wages, and your tip at the end of the hunt makes a great deal of difference in their lives. You don't need to carry much on your person while hunting. Over six safaris I've never carried a bipod or other rest, the PH or trackers carry those. Learn to shoot quickly and accurately from a tall ( standing height) wooden home made bipod at home before your trip, but use the one they provide. Shots won't typically be very long. 200 M or much less in most cases. The trackers usually wear a backpack and can carry a water bottle for you and can stow your jacket when you take it off as the morning warms. A Leatherman or similar multi-tool is more useful than a hunting knife. Most camps have full time skinners and you'd just get in their way by getting your hands dirty. The thorns have to be experienced to be believed. I can't wear shorts in Africa. I'd like to be cooler and enjoy the freedom of movement, but the thorns eat up my lily white Canadian legs. The picture of my legs below is from one afternoon of stalking giraffe in Namibia. The big ones can go through your boot soles, the small hooked ones tear your clothes and your skin. Tough cotton / canvas clothes works much better than lightweight synthetic because of the hooked thorns slide off better.
All i carry on my person while hunting in Africa are rifle w/sling and binoculars, the above mentioned Leatherman, ammo pouch, a lighter, a small pocket flashlight or head lamp, and a lens cloth/hanky. Lately my cell phone serves as a camera. A big camera with telephoto lens, and a few more optional items are left in a day pack stowed in the bakkie.