$901 a day can get you an awful lot of Uber rides. Traffic lightens up a lot during the holidays, but it can be a little bit of a trek to SB as someone mentioned. It's not our scene, so we tend to avoid going out there more than every now and then.
One consideration for NYE would be that the Miami New Years celebration is held at Bayfront Park, which is a 5 min walk from the HR. Also, areas like Wynwood, Brickell, the Adrienne Arscht Center, the AA arena, Coral Gables, and Little Havana are easily accessible from the HR using the free trolley and metromover systems.