F&W: I only have one evening!

We are making a quick trip to WDW Oct 18-20 mostly for the halloween party on Sunday. I am planning for DS6 and I to go to F&W on Saturday evening (I know it will be busy) and I have no idea what to expect. What should I definitely not miss? Are the lines for food going to be super long? What should be my touring plan (using fpp earlier in the day elsewhere)? DS6 is into good adult food but he will want to go on Figment and do a couple Agent P adventures. I need advice from some seasoned liners! Thanks.

I've been using the disneyfoodblog for all my info and guidance. Highly recommend taking a look there and picking out 3-4 must do kiosks for just one busy day.