Wow! Your friend sounds like an amazing man. I sincerely hope someone is able to find a treatment that works for him. And you sound like an amazing man, too, for being so thoughtful and wanting to make the day special for him and his bride. Have you looked into those fancy picnic baskets they make now? The ones that are insulated like coolers, but have straps and compartments inside to hold proper china plates, silverware, champagne flutes/wineglasses? I've seen some inexpensive, smaller ones at stores like Bed Bath & Beyond, but I know places like Sharper Image or similar high-end gadgety store, or like LL Bean or "glamping" supply places (speaking of "glamping," lol, above) would probably have bigger and better ones, perhaps even in a backpack-type container rather than a wicker basket. It might be worth looking at survivalist websites/supply stores, too, because a lot of that stuff is designed to last and to be light and easy to carry. Failing that, self-storage places usually sell really nice bubble wrap etc., you could wrap your bottles/plates/glasses in that and stuff it all into a backpack, with the food on top? Or maybe a rolling case of some kind to bring along behind you? Is it just you carrying things, or might there be one or two people who could even carry just a couple of pounds of stuff, just to lighten your load a bit/give you a little more room? Are you looking for suggestions for food to bring, or suggestions for preparing food on the mountaintop (which sounds amazing)? I might have some ideas. Have you talked to his bride about it (or his groom, if that's the case)? Does s/he have any thoughts?