You are correct. A great many of our senior citizens are going to casinos. With the increase in gambling in our area, along with its increased acceptability, more people of all ages are gambling today. Gambling is an attractive form of entertainment for the elderly because senior years are a time of many changes and great upheaval. Children are grown and out on their own - often living at great distances.
Retirement can result in a loss of identity.
Retirees often sell the family home and may move away from friends and familiar surroundings. Senior citizens face many losses. In the later years, the elderly can expect to lose friends and their spouse to death. Along with an unaccustomed abundance of free time, loneliness and boredom often set in. The bus tours to casinos you mention offer seniors the opportunity to fill their time and socialize with people of their age.