Hi. My husband and I had our interviews in Seattle this week. The interviews went swimmingly and were in-person in our case (i.e. not with a remote USCIS offer via tablet, as some have reported here). The interviewing officer was very friendly.
They weren't offering same-day oaths at all though, and we were both immediately scheduled for our oath ceremonies on July 4 at Seattle Center. Looks like the naturalization ceremony there on July 4 is a fun affair that takes place every year, complete with music, dignitaries et al (details here: https://seattlecenter.com/events/featured-events/naturalization-ceremony#:~:text=Every July 4th,welcome them to the country.). Newspaper articles from previous years suggest that they swear in 500 people at this Independence Day ceremony every year, and I'm guessing that if you're interviewing this week or next week, there's a good chance they'll try to get you scheduled to take your oath there.
Our background: We are French citizens, arrived in the US on an L1A (+ dependent visa) in 2015, got our green cards (EB1) in 2016 and applied for naturalization in April 2021.
All the best to those waiting!
PS There's ample free parking next to the synagogue that's 8 minutes away by foot from the USCIS office.