The Little Beehive trail continues passed Lake Agnes directly behind the teahouse for about 1 km giving you incredible views of Lake Louise and the valley below as you make your way to the main viewing area.
A view of the hut atop the Big Beehive.
I think the amount of people on the trail varies depending on when you're visiting and what time you head out. We hiked later in the day and where visiting on a colder weekend (it snowed in September kind of weekend) so, we had the trail entirely to ourselves apart from seeing one other couple leaving the viewing area at the end of the trail just as we got there.
This trail is a definite must if you're already heading out to Lake Agnes, it doesn't add a lot of time to the hike and Lake Louise only gets more spectacular from above.