I would like to design a page that contains great marketing fluff and - for a short period each year - information on how to signup for our programs. If I could have two layout containers that I could swap in (one with all the signup details and one with a "signup is currently closed"), that would be helpful. Otherwise, I have to redesign the container each season.
|Frequency||Several times a year|
|Which sport(s) does this apply to:||Ice Hockey|
Sounds like the templates would be a good fit for this. You can create a template in the admin control panel and then apply that to multiple pages right from there. If you need to change those out you can do them in batch from the same location. You keep the templates in place and then just change which pages they are attached to. See this article for more info.
NOTE: Make sure you don't unlink the template!