Not everyones cup of tea, but don't stay off the air just because it is a contest weekend - you will miss some rare dx stations, that is certain ! It is also possible to get DXCC in less than 12 hours - having a rare callsign helps a little too <grin !>
During contests there is the chance to 'catch' some of the rare and remote places around the world that operate only for the duration of the contest. Best time to search for these stations are just before the contest is due to begin, when they test their equipment.
With an inverted 'L', coaxial dipole and a Moxon Rectangle I have had some very high scores including two former WORLD RECORDS using less than 100 watts.
The photo above was CQWW SSB breaking the world record at 28 hours in. It was my first contest and finished early due to other commitments. The winning formula was a ZC4 prefix, sunspot maximum and at this time SBA Cyprus was still in the Top 20 most wanted list.