Part of the bid for any Olympics is outlining your intentions for the use of the Olympic Park once the games are over. One reason London won its bid was its plan for the future of the area. The Olympic Park transformed a seedy, even contaminated area of east London. And that transformation will continue.
The park itself will be dedicated as the Queen Elizabeth Olympic Park next July. Some of the buildings will remain; permanent owners for most of them were secured long before the games started. The stadium itself will be sized down and become a multi-use athletics stadium. The Aquatic Center will remain and become a community "swimming hole" of sorts. Housing will be added, as will schools. The Orbit tower will remain as the local attraction. The shopping district (which you conveniently passed on your way out of the park) will grow to support the expanding community. In short, the Lower Lea Valley area will continue to evolve in a positive manner.
I am always looking for a reason to return to London, and so I will look forward to making a trip back to the park after it has been dedicated.
For now, London looks forward to hosting the Paralympic Games, which begin at the end of the month. Ticket requests have skyrocketed, owing to the overall success of the "big show". I'm sure we'll have another round of "Well done, London, well done."