Artoo had some difficulty getting out of the house that morning. Threepio had been whining about how he was supposed to be watching the baby and how he didn't want Artoo to leave him alone. But Artoo insisted that he had previous obligations. What? It wasn't his fault that Jaina asked him to go flying and not Threepio. Threepio would have just been a stick in the mud anyway. He wasn't much of a flying droid. Not like Artoo.
It took Artoo a while to get to the hidden location of Jaina's ship, not because of the directions (no, his inner navigational system worked splendidly,) but because he couldn't rightly just hop on a bus and ride over to the woods. Well, he supposed he could have tried to hitch a ride. But that might have been more trouble than it was worth. It was much easier to just roll along streets and sidewalks until he came upon the woods.
Of course, he had to lift himself over the branches and roots sticking out of the ground (and he got himself considerably dirty in the process,) but he eventually made it to the clearing.
"Bee-brrooop!" He whistled, announcing his arrival.