Panda Cub Bei Bei Ready for Public Debut at National Zoo

The main idea is that the panda cub, Bei Bei, is ready for his public debut at the National Zoo in Washington. This is evident from the statement that Bei Bei will be making a few appearances before selected audiences before his public debut on January 16, when the panda house will reopen. Additionally, it is mentioned that around that time, Bei Bei will be confident enough on his feet to venture into the outdoor panda habitat for the first time. The main focus of the passage is on Bei Bei's readiness to be introduced to the public.

To find the main idea, one should look for the central theme or topic that the passage revolves around. In this case, it is the public debut of the panda cub, Bei Bei. The passage consistently emphasizes Bei Bei's upcoming appearances and his readiness to explore the outdoor habitat, indicating that the main idea is centered around his public debut.