Whether you sit side by side on Space Mountain depends entirely on which Disney park you are visiting. At Walt Disney World (Magic Kingdom in Florida), the ride vehicles feature single-file seating. Each "rocket" holds three passengers in a row, one behind the other, so you are sitting solo in your own seat. This configuration creates a more intimate, narrow feel as you zip through the dark. In contrast, at Disneyland (California) and Disneyland Paris, the ride vehicles are designed with side-by-side seating. In these versions, each row holds two passengers next to each other, similar to a standard roller coaster. If you are traveling as a pair and want to scream right next to your partner, the California or Paris versions are the way to go, whereas the Florida original offers a classic "bobsled-style" experience where you'll have to shout to the person behind or in front of you.