Retailers are preparing for one of their biggest weekends of the year as an estimated 164 million people are already planning to go shopping Thanksgiving Day through Cyber Monday, according to the annual survey released today by the National Retail Federation and Prosper Insights & Analytics.

The survey found that of those planning to shop during the long holiday weekend, 21 percent (34 million) plan to shop on Thanksgiving Day, but Black Friday will remain the busiest day with 71 percent (116 million) planning to shop. Forty-one percent (67 million) are expected to shop on Small Business Saturday, and 78 percent of those say they will do so specifically to support small businesses. On Sunday, 20 percent (32 million) are expected to shop. The shopping weekend will wrap up on Cyber Monday when 46 percent (75 million) are expected to take advantage of online bargains.

Of those shopping this year, 65 percent said they are doing so to take advantage of deals and promotions retailers will offer, while 26 percent cited the tradition of shopping over Thanksgiving weekend and 23 percent said it is something to do over the holiday weekend.

“While the long weekend always draws shoppers of all ages to take advantage of the irresistible deals and promotions that retailers are offering, we’re seeing a change in how the younger consumers see the weekend,” Prosper Insights Executive Vice President of Strategy Phil Rist said in a statement. “Compared to older generations, younger consumers under the age of 35 are more likely to be attracted by the social aspects of shopping over the weekend or by the fact that it is a family tradition.”

The survey, which asked 7,516 consumers about their shopping plans, was conducted Oct. 29 through Nov. 7 and has a margin of error of plus or minus 1.2 percentage points.