The Obsidian Room gives off "banquet hall" vibes, like dining in one of the stately restaurants…read moreaboard the Titanic, without all the seawater..but it sure does fill up just as quick! As soon as the doors open at 5:00PM, if you're not already in the queue to get your name on a list for a table, you may be waiting for a bit.
We ended up dining her twice, over the course of two days, as our road trip through Yellowstone found us back here at Old Faithful both evenings. During our first visit, our server Hudson, who honestly was one of the best servers we've encountered anywhere (management, take note!), was genuinely pleasant to interact with, efficient, engaging, and accurate. We split an amazing charcuterie board (probably the best thing on their menu), the lamb lollipops (man, that chimichurri is on another level!), and a couple of cocktails, and had a wonderful experience.
During our second visit, things were still very good, although I think we'd been spoiled a bit by Hudson. Our server wasn't quite as charming (Hudson was engaged with other tables nearby, to our chagrin), and our meals not quite as enchanting (still good, but lacking a little something), but by no means wasn't a bad experience whatsoever. For specifics: my wife's wild mushroom pasta, to which she added some grilled shrimp, was really great...but would have been less so without the added shrimp: too small of a portion, and no significant source of protein or substance - just a plate of noodles and fungus. That may sound like a nitpick, and in truth, it is, but as-is, it's lacking something, and doesn't warrant its price point.
All things considered, the Obsidian Room does most things right, and a few things need improvement, but when it comes to service, they're knocking things out of the (national) park...and considering the colossal size of Yellowstone, that's one hell of a home run!