I said I would write on how the controls are in MGS3, so I am now. I don't like them. Granted, MGS2 had its problems, but it seems it has become worse. Not by much, but it's noticable. It's a big pain trying to run from hornets when Jack has the stupid habbit of stopping and hiding behind anything he can. The hornets just envelope you. So, extra care is needed when running. It is also very hard to perform certain functions in a timely manner, such as aiming at a moving target, trying to roll a barrel on someone, etc. Crawling for food, or for collecting certain items can be a pain, too. Also, there is a lot of slowdown during big gun batlles that also mess with your movements. More then once I got in a situation that needed immediate attention of a shotgun blast, but I missed the chance, because the enemy had fired and moved to a different position. But, everything else about the game is just fantastic.
There is so much food, you needn't worry about starving. Actually, your "stamina level" goes down, and aiming a gun, walking slowly, etc, become very difficult. There is a "life gauge" as well as a staminal gauge, and one of two ways to revive it are by crouching or lying still until it goes back up. The other is to give yourself a "life recovery shot" that will boost you life gauge back to normal, but I only found two in the entire demo, so it looks like crouching for a while is the most popular way to boost your life gauge.
I wont spoil everything about the game, but I will tell of some of the "hidden" things Jack, er-um, "Naked Snake" will do at times. Farting and vomiting were a nice surprise. I cannot remember what food made him fart, but I think it could have been the Magpie bird, or the other black bird. I only ate them once because they're a lot harder to catch than other food, and they don't offer much of a boost in stamina. The Golova fruit, and the Hornets Nest are golden. They taste the best, and make Snake very happy, along with the snakes, an anaconda and python. What made him vomit was the Siberian Ink Cap, which is one of the mushrooms. I picked one, and then ate the next one I picked and he puked. Snake hates the mushrooms, and they offer little boost in stamina. Food can spoil, and the Ink Caps turn black, or "ink" starts to develope on them, which is probably why I vomited when I did.
Well, that's it for now. If you want more details, just ask.