The Oregon Convention Center's December calendar carries eight bookings. Three fall inside four days, from Friday 4 December to Monday 7 December 2026, and each brings a different kind of demand to the Lloyd district.
Friday 4 December puts a private employee holiday party in the Portland Ballroom. Saturday 5 and Sunday 6 December put The American Northwest - Portland - Nationals - DI/DII in Hall D. Monday 7 December puts the 24th annual Oregon Business Plan Leadership Summit back in the Portland Ballroom.
Three booking shapes
The party is a private event. The venue card carries the label Private Event and the contact number 971-206-5200. The venue's event data holds the booking from 6:00 p.m. to 11:59 p.m. on the Friday, so the whole booking sits inside one evening.
The nationals run two days. The venue's event data opens the booking at 8:00 a.m. on Saturday 5 December and closes it at 8:00 p.m. on Sunday 6 December. The venue card prints doors at 8:00 a.m. on both days and adds that children under five enter free. The event's own description names full-size warm-up floors, double-wide tumbling strips, video replay judging and awards ceremonies with jackets for champions.
The summit runs one day. The organiser's volunteer page states it anticipates more than 1,200 people in attendance. Its agenda puts on-site registration at 7:30 a.m. in the Portland Ballroom Lobby, the plenary session at 8:30 a.m., breakout sessions from 2:00 p.m. to 4:00 p.m., a 4:00 p.m. close and a reception from 4:00 p.m. to 6:00 p.m. The summit page describes two rounds of breakouts inside that afternoon window.
The night two bookings share
Sunday 6 December is the nationals' second day and the summit's eve. One night carries demand from two bookings. The nationals close their Hall D booking at 8:00 p.m. that evening. The summit desk opens at 7:30 a.m. the next morning. A delegate who wants that desk at its opening hour needs the night in between.
The deadline lands on the party's date
Online registration for the summit shuts at noon on Friday 4 December, the day the holiday party takes the ballroom. A general seat costs $375 online and $450 on site. A public sector or nonprofit seat costs $275 online and $450 on site. Full-time students pay $75 either way. The $125 equitable access rate takes interest forms through Friday 30 October.
The ladder carries two prices for one seat, and the price turns on the date of the decision. A delegate who registers at the desk pays $450 for the seat an online buyer held at $375.
The garage band
The venue's underground garage holds 800 spaces across two levels. A standard day costs $15. During events the venue applies a dynamic $15 to $25 band at the entry, and it assigns that band to event days. It publishes no rate for a named date. All three bookings appear on the venue's event calendar. A rate manager who wants the day's own number reads it at the gate.
The garage opens at 6:00 a.m., admits first come, and warns that it can reach capacity on days with busy schedules. Overnight parking is prohibited.
The block on the record
The summit page links the Hyatt Regency as the hotel partner, through a group-booking address carrying property code PDXRP and group code G-OBCS. That property sits at 375 NE Holladay Street, about 240 metres from the venue's 777 NE Martin Luther King Jr. Boulevard address on a straight line. The booking page answered a scripted request with HTTP 403, so the rate sits behind the booking flow.
What the record leaves open
The venue's card for 7 December carries the date, the room and the words Registration Required. It carries no hour and no attendance forecast. The venue publishes no forecast attendance for the holiday party or for the nationals. The 1,200 figure belongs to the summit and comes from the organiser's volunteer page.
The December calendar lists nothing on Thursday 3 December. The arts and culture summit books Portland Ballroom 251 and 257-258 on 1 and 2 December, the holiday party holds the ballroom on the 4th, and the leadership summit holds it on the 7th.
Four nights, one calendar
Four nights sit inside the run. Friday and Saturday carry the holiday party and the first day of the nationals. Sunday carries the final day of the nationals and the summit's arrival. Thursday 3 December carries no booking on the venue calendar.
The summit page runs the theme Reckoning & Renewal across five pressures: housing, K-12 education, wildfire management, tax reform and land use modernisation. The programme carries those five subjects through the plenary and both breakout rounds. The delegate travel lands on the Sunday night.