This is still the bildup for the party, guests are ariving etc. Wonder how long will this arc be when it is second week and main events, whatever they may be, still haven't started. I believe that the space arc had around week and a half of buildup and it lasted for sixty strips. This one has the potential to be even longer. Especially since the entire main cast could, potentially, be at the party.
As for Hanner's entrance, amazing entrance, no doubt about it and probably moment of the week right here at the start of said week. But, what's interesting, is this a throw-away gag about Wonder Woman for this strip only or will this can this be considered new addition to the lore of QC. QC Earth has developed, amongst other things, true stealth planes, perhaps?
Also, there are very clearly loads of other houses on the shore of the lake so, unless a gigantic squid comes out of it, the whole "horror" buildup of going to the isolated house in a forest isn't there. So, maybe this arc won't be Halloween themed? Though, that does depend on the lenght of the arc as well, which might be extensive, since there are still sixteen days 'till Halloween.
Aside from that, this might signify improved relationship between Hanners and her dad, assuming he built whatever is carrying her, since before this episode Hanners never used extensive wealth of her parents (beside's that one time she bought a restaurant where Marty got poisoned) or her father's many inventions. This is the first longer arc since the space one and it might be that their relationship has improved. Also important to note, this would probably also qualify as a showcase of just far she had come, from completely anxiety and OCD ridden to the much more confident and brave Hanners of today. I wouldn't dare jump out of a halicopter/plane/whatever it is that brought her, while hanging on a rope.
And ,finally, my first post here. woot!