Don't worry man. Set your filter to Normal difficulty for the free weekend and play on those servers. There's bound to be a zillion Normal servers up. As you get better, move up a few perk levels, you'll be ready to try some Hard difficulty games and get a feel for the difference.
Me personally, the presence of many new L0-L1 people will be pretty much meaningless, as I play Suicidal 90% of the time these days.
And yes, if you enter a Suicidal game with a very low Perk, you'll very likely be shown the door. That's reasonable.
But let's face it, we're all going to see more Normal and Hard action since people will be trying/leveling the new Demo class. Lots and lots of people that ostensibly look like newbs, heh.