Pros
The culture is more laid back and relaxed. You have a chance at high visibility because it isn't that large a company. Moreover, collaboration is encouraged so you have the chance to work with many different technology and business teams in the company. The weekly 1:1 with your manager is important because they will actually talk about career growth if you are interested. There are some travel perks (not as many as people would expect) so it is great when you can use them. You feel fortunate that you work at a brand name company because your friends and strangers always have a comment about their travel experience and want to discuss it with you. It's nice to know that your daily work actually has an impact on customers.
Kontras
Since Expedia went public and has matured, new processes were added were probably necessary but sometimes feel cumbersome, which amounts to frustration as they curb your efficiency. Since some of the tools/technology are a little outdated so you do not necessarily feel as if you are the most productive.