A couple of things. First, using 'T' to travel will essentially satisfy your need to eat, drink, sleep, and will heal any wounds you have short of restoring lost limbs. With this, it is possible to never have to actually eat or drink anything.
However, if you find that there is no more meat/fish to be had, either due to poor planing or having eaten the worlds supply, then hit 'L' to look around your immediate area. When you do you will probably find beetles and worms in forested or grassy areas which you can catch. If you are starving, your dwarf will willingly eat a beetle or worm.
Personally, I find my adventure gets rich pretty quick after I go and assassinate a few goblins and make off with there stuff.
i rarly ever get quest due to no one needing me
Most likely do to the fact that your game world is older the say, 100 years. If you really want some megabeast hunting fun then just gen a world and stop at year 2. Should be plenty of dragons for you to slay.
so adv should be started at year 1-2 and not year 500 =o
If you want megabeasts then yeah. Dragons and other quest creatures get killed off alarmingly fast during worldgen so waiting for the game to stop gen for you generally means that there's gonna be little to no megabeasts left.
year 1-100 (ish) tons of little, unconnected towns and many megabeasts.
year 101-300, some cities and connected towns, generally much fewer megabeasts
year 301-on, civilizations are fully formed and megabeasts are all but extinct.
thats the basic rundown, though it always varies.