CHeck engine light..wtf HELP ME!

[Grip72]

alright i'm driving down town and all of a sudden my little yellow "check engine" light comes on and stays on...everything seems to run fine and nothing seems changed. HOWEVER, i am leaving on tuesday to go on vacaction and will probably be putting close to 1800miles on my car over that time! And today is friday night so i can't even take it to a mechanic or honda tomorrow to get it looked at? what could it be?!

so i need ur opinion
should i drive my car anyways and hope for the best?
or
should i leave the car here because its probably something serious?

i'm just really worried about something going terribly wrong and being stranded in some small town for days...and also being expensive!

thanks
cuz i'm freaking out..i CAN PROBABLY catch a ride with one of my buddies to the first vacation stop, but i planning to continue on further to where none of them are going! hence, why i need my prelude!