Here's a few links to help plan your visit to Portland:
Food Carts Portland - including maps of where they all are. Some move around (like the aforementioned
KOiFusion) but most are stationary and clustered in "pods." Downtown is mostly just for lunch, and some of the ones in SE are open very late for that after beer-o'clock snack (beer o'clock is 2 AM, btw).
Barfly Magazine - find the perfect bar to fit the moment/location. Tons of search criteria, though listings tend to fall out of date. FYI - we have two classes of bars: full bars and taverns which only serve beer and wine. Tavern licenses are much easier to get, so there's a lot of those and not all of them serve much in the way of food. Full bars tend to have more food options, and some bars (of both types) are among our best restaurants.
Eater PDX - List of the 38 hottest restaurants. Haven't eaten at all of them (actually only about 1/3) and agree with all but Jade Teahouse and Little Big Burger. Both I find flagrantly mediocre, and cannot understand why the keep making lists like this. Le Pigeon and Beast have both recently won major national awards.
And our two weekly newspapers:
Portland Mercury and
Willamette Week. The WWeek is more mainstream and the Mercury is more hipster, but both have good listings for what's going on. WWeek is better for restaurants, Mercury for music. Sadly, both of these papers are better than our daily fishwrap.