Listen to the ATIS. It may say to call Ground directly; if so, it's just like a Delta. If not, call up CD first. It's still usually the same person, so they often don't even notice which freq you use. The most common clearance for VFR departures is "Runway heading until the coast (or CA1), then on course. Squawk XXXX Depature frequency 127.15" You'll get a code and departure freq always, which is the thing that really separates it from Deltas. You'll need to read it back, and some controllers are stickier about that than others.
The arrival has a couple gotchas. First, the pattern is ALWAYS on the East. For both runways. There's a hill on the other side. Be aware that the IFR flights (often big turboprops and jets) come over the hill, and if you're on 28R, do not cross into approach for 28L. You may not see the plane on final for it because of the hill and they are much faster than you. The thresholds of the two runways aren't in the same place, which can make judging 28R a challenge. However, they will often ask parking and put you on 28L if there's no traffic to shorten your taxi. It will still be right traffic, so ensure you know which runway you're landing on. LVK has similar issues, so you should be familiar with this already.
And, yes, the 1800' pattern will mess with your timing. Expect it, and be ready to go around if you get the approach wrong. Parallel approaches by the big iron can mess with your head, too. Departures are nearly always from 28L for transient, no matter how small you are. The runup area is huge...and invisible to tower. There is a dashed line that shows the edge of their vision, in case you're wondering what that extra line is for.
The other line to worry about is the RED one. Look for it and DO NOT CROSS IT. You may not go near it on arrival, but you will on departure. Stay religiously on the taxiway...crossing the red line may net a security response. Of course, since there's a small chance you'll be playing with bigger jets, don't forget about jet blast. Ground controller will be watching for you, but keep your ears open. If a jet gets an instruction to move, make sure you know where it is and that it won't affect you.
All that said, MRY is a sleepy, easy airport. I've been there many times and it's great. Del Monte used to be the best small GA FBO there, but they've tightened up to be as restrictive as the Jet Center. 15 gallons or $45 ramp fee, they won't budge, either FBO. Del Monte is a shorter taxi and more convenient, though.
Have fun!