I may have already covered them in the video, but I'll try to reiterate or explain better here, just in case.

You do NOT have to eat all the Pac-dots in each maze before collecting the fruit. This is key towards saving time in most sections of Adventure Mode, no matter which category. Pac-dots can also disappear as soon as a fruit appears in some cases, so it's best to bomb anyway than to navigate towards the fruit. The golden rule: Follow the yellow-dot road. (Off to see the Wizard of Oz, I suppose.)

Bombs are Key: If you ever get stuck in a sticky situation, bomb back to start and get back to safety if you can. Bomb also as soon as a fruit appears, with some exceptions. (You can get more of these if you clear the whole maze before moving on.) Those include Bosses and Score Attack, which I'll explain in another guide.

Ghosts: You are no longer killed by one single touch on a ghost. If you bump into them rapidly, they will be angered and begin to try to kill you. It's this "don't bump into me and I won't kill you" scenario with the ghosts, especially with the added mini-ghosts added to the train. Might be useful towards getting back on the Pac-dot path, but very risky depending on the situation.

Trains: There is no longer a single train of ghosts chasing after you. Sleeping ghosts, when woke, get instantly added to a "host ghost", which are any of the 4 main ghosts. When you chomp on a pellet, you cannot eat any of the small ghosts in the train; you MUST eat the main ghost head-on to eliminate the train.

Paths: When a Power Pellet is eaten, a bunch of paths open to your benefit. Those are the ghosts' pathways for when they are frightened. In most cases, they'll stay on this path as long as they're still on the maze. Use them to your benefit; good judgment skills as to where they go in accordance with your location are key.

Moving fruits/Power Pellets: This feature makes a return from Ms. Pac-Man, only this time they are a bit more clever with movement. Again, quick judgment is key.

Braking: This is now a thing. Without pressing an arrow key, press the Alt button to brake if you need to let a ghost or many ghosts pass through. Helpful in some areas where a Pac-dot path interferes with the Ghost Zone.

Airborne Chompfests: Think of this as a free bomb after eating the last train with so many ghosts. If you're on "Phase 2" (chasing the power pellet down -- explained in the 2nd guide), make sure you eat all of the Pac-dots before going airborne.

Scoring: If you're doing Any%, ignore this. Otherwise, make sure that you have a (nearly) maxed award per Pac-dot, as well as opportunities to add to the ghost chain. It's actually a waste of time during Score Attack areas (in early mazes, anyway) that you eat all the dots, but make sure you wake up as many ghosts as possible to earn that Airborne Chompfest.