Hey Kammer,
tis a pity, but don't despair- there are plenty of sites to visit in Edinburgh. If it's big stones yer after then check out the Caiy Stane;
http://www.themodernantiquarian.com/browse.php?site_id=593
or Ravenswood Avenue;
http://www.themodernantiquarian.com/browse.php?site_id=728
and the Niddrie Stone;
http://www.themodernantiquarian.com/browse.php?site_id=730
Methinks I've added buses to get from Princes Street to em all.
If you're heading up Arthurs Seat, then there are plenty sites round it to keep the modern antiquarian happy for a good few hours;
http://www.themodernantiquarian.com/browse.php?site_id=2319
Have fun!!
Martin