So sorry to hear about the loss of your brother, as well as your mom. My sincere condolences. I also lost a number of close family members over the years including both parents and my older brother. Needless to say, it's always difficult coping when you lose a love one. Time helps, but I still miss my folks and brother, especially around the holidays.
It's also good to hear that you're going to Vegas with some family and friends to celebrate the memory of your brother who also loved Vegas.