the best laser for people with light skin is the gentlelaseplus. the diode and yag heat more slowly to give dark skin time to cool so the heat can be taken away without it getting burned. these two require that the hairs be course and dark. the gentle lase has shorter pulses that heat the hair fast, killing even slightly pigmented hairs. Just make sure you don't have a tan, or they will use a lower setting and your hairs will come back blond.
make sure they use a fluence of at least 16, and preferably higher so you don't get blond hairs coming back. some techs will use lower settings just to get more sessions out of you. they used a 12 on me and it did not hurt at all.
i buzz my hair with a short guard when it reaches 1/2 inch. I wish I could buzz it shorter, but the hair becomes like a cactus and digs into my pants and hurts.
I used nair and epilstop plus. both burn my skin much faster than my hair, and are good only for taking sharp edges off recently trimmed hair.
i waxed myself 4 times, and it hurts like hell and cuts your skin because it is pulled out against the grain. it took a week for it to grow back. and my skin was bleading in places most of that week.
shaving my legs and butt is a bad idea. when I get more moeny, i'll finish my laser treatment with the gentlelase plus and demand that they use a fluence of 20 at 18mm or i am going somewhere else.