I register for classes at the end of the month, are classes first come first serve ?

I’m about to attend a local technical college, for 6-9 months and then plan on transferring as a sophomore to SCAD (Savannah College of Art and Design)..Registration is on the 30th and 31st..Is it always first come first serve ? Because I’m also working (40 hours a week) and I would really love to take [...]