I figured Yoda just hobbled off the ship first and hustled over while Ahsoka was giving the kiddies a pep talk. How wasteful of Yoda to fly there on his own.
Yoda was already on Ilum when they got there, so I assume he has another ride. The kids probably need the diagram for the basics, like issues with the circuitry, but the specifics are up to them and what they feel in the Force.
Ugh, no more timeline bending! So frustrating! I didn't know about that.
The Hondo-Ahsoka moment at the end was weird, I agree - it would have been less creepy without him caressing her lip. I keep trying to remember where everything takes place in the timeline. I guess it's not that difficult - Anakin goes to Florrum to have Hondo run guns to Onderon, then Hondo captures Ahsoka here, and then later Obi-Wan works with him to fight Maul and Opress. It's interesting to see Hondo switching sides so often, showing that he really is in it only for the money.