Pros
Work culture. Benefits. Campus amenities. Good coworkers from a variety of backgrounds. Opportunity to get in on the unification of Expedia Group's many lines of business. Interesting technical challenges if you are on the right team.
Cons
Impersonal office space: not much sign of orgs/teams/individuals owning any space. Not much in the way of food or social gathering spaces offsite and near the campus. Questionable leadership: first team I was on had a project that had already passed through two other teams and had >60% of the codebase scrapped. Found out after leaving the team that the target delivery date was pushed back 8 months. Would have been much easier to do it all from scratch. Worked on 3 other teams at the company and never had this same problem again, but there continued to be a considerable amount of reorgs. Company was going through reorganization and "vertical alignment" of products, services, and infrastructure, which made for a chaotic environment and some conflicts of interest.