There are two wings of the Oregon Convention Center: the north wing, with exhibit areas (and meeting rooms) A, B, & C, and the south wing, with exhibit areas (and meeting rooms) D, E, & F.
Each wing has its own Starbucks, and its own restaurant. There is also a Kinkos. However, none of these might be open.
Wireless access is available for $12 a day. It is glacially slow, even when you're at a conference that has very few folks web surfing.