Final answer:
Alexis doesn't go to the bar with David and Stevie because of potential personal issues or conflicts.
Step-by-step explanation:
In the given context, Alexis doesn't go to the bar with David and Stevie because Claire mentioned that she does not want to be shut in with Alexis.
This suggests that there might be some personal issues or conflicts between Alexis and Claire that make Alexis unwilling to go to the bar with David and Stevie.