Oh man at first I thought you were talking about HoJo to
Disneyland HOTEL. I was going to say "omg just drive!" b/c I ruined my feet walking from HoJo to Paradise Pier (in "cute" shoes, I'll admit) the night before we went into the parks!
But just Disneyland/DCA, it's so doable. The short cut isn't so much SHORT, but it's shortER. Most people just come out of HoJo's parking lot, cross Manchester, and walk down Harbor on the restaurant and hotel side. There are many driveways, many people to dodge, and a couple crosswalks that you have to wait for.
If you come out of HoJo, cross Manchester, then cross Harbor at that point, you will walk on the Disney side of the street. There's a driveway but it's for taxis and an employee lot, and therefore much less traveled than on the other side. You won't be dodging many other people. And then before the big intersection that everyone on the other side of Harbor enters the park through, there's a cut-through; you'll see taxis parked in there. Just turn right, and you'll soon see that you're on the other side of shuttle "aisles" as all the people who just walked down the busy side of Harbor and crossed en masse at the light. You will VERY likely notice that you are ahead of those that you saw earlier.
Then you get to bag check and on to the esplanade!
It's NOT a far walk, not at all. In my trip report that I'm doing right now I even mentioned the times from the pictures I took, and even though we were going slow thanks to my cute shoe incident, it was still not that far at all. AND we were in the furthest out building at HoJo!
Parking at Mickey and Friends lot has always taken us longer to walk than walking from/to HoJo. We've parked there twice (so the experience is not huge, but still) and you're at the mercy of where they tell you to park. you don't get to choose. So if they tell you to park in the spaces furthest away from the escalators, then you're walking the distance of that structure. Get to escalators, go down, walk to tram. Wait for tram, wait for tram to go. Hum dee dum. Then you're dropped off well into DTD, and you walk out of DTD to bag check (the opposite, and IMO busier, bag check that you'd enter from the Harbor side). And finally at the esplanade.
I'm NOT a fan of driving in b/c those walks have always been longer, and I don't even want to TALK about how long you have to wait for the tram at night.