If you're leaving the park, countless other people will be leaving at the same time. You'll never be alone unless you TRY to be alone. Just stay on the touristy (hotel) side of Harbor if your'e worried.
But even on the other side, you're in full view of cars and the other side of the street, so I wouldn't worry too much about that, either.
You'll be OK. You are very brave! I wish I could join you that early but I think my husband, since he would have to take a week off to sit around the house (albeit playing with his son that he adores spending time with), would cry.
Borrow my solo flight routine.
Buy a trashy magazine. In college and beyond it was ALWAYS Cosmopolitan. Since I used to fly over college breaks, on my way down it would be one months' mag and then the other month's would have come out during break, so I'd buy one each way.
So buy one magazine that is a Feb edition...Vogue, Cosmo, something HUGE that you can read and savor pictures in. I had forgotten how excellent Vanity Fair was until yesterday when I was reading my friend's copy while DS played with her cats (I'm visiting and feeding her cats while she's in Hawaii). So get one for Feb and do NOT read it (just put it in your carryon bag NOW), then at the airport buy the March edition, and you have one for the flight down, and one for the flight back.
Take time to look around your airport...I forget if you're leaving from Canada or if you're going from Seattle...if from Seattle, take some solid time looking out those awesome windows from the renovation. Walk as slowly or quickly as you want and need to. Get a snack, a coffee or juice or something, and some big muffin that you would never get with your family b/c they would all snarf it before you got to it. People-watch. Keep a smile on your face. When you see families yelping at each other, smile towards them knowing how nice it is for you to NOT deal with that on this trip. (do that at
Disneyland, too)
Take your trip 20 minutes by 20 minutes. On the plane realize there's a rhythm to the flight...boarding, getting settled, taxiing, take off, leveling out, readying for beverage (and maybe even food) service, getting beverages, seconds on beverages depending on your airline/flight, just flying..., preparing for landing, descending, landing, taxiing, etc. Tick off each part of the flight as you go.
Enjoy feeling free as you pick up your baggage and you don't have to deal with other people's baggage too, enjoy how quickly (or slowly! whatever you want) you can get from point A to point B (that goes for Disneyland as well).
There, I've written you a novel, but now you don't have to spend time working out your own system.