well it really depends on the situation.
if i was going to go across the country, i would definitely invite my mom along if she wanted to come, i mean it's a great chance just to explore (in this case) boston, because neither my mom or i have even set foot in the state of mass. thus, even if i am going through the orientation activities, my mom can check out the law school and take in the local flavor. also, i think it would be good for my mom to see what environment i am going into and giving me her opinions about the whole situation. obviously, it's the admitted student's call and i have no problem with a parent coming along or not.