Custom url structure - pages under a custom post type

Question

I'm struggling with the structure of my Wordpress site and I was hoping you might be able to give me some advice.

The site is for a series of events and the structure is as follows:

• Gateway (contains a list of events)
  • London 2012 (a specific event)
    • Overview (default for event)
    • Speakers
    • Agenda
    • Venue
    • Register
  • New York 2012
    • Overview
    • Speakers
    • Agenda
    • Venue
    • Register

I am using several custom post types, and each have a number of custom fields attached:

Events: the information from this custom post type is used to create the Overview page Speakers: this a pool of the potential speakers. Speakers are added to a specific event using the above custom post type Venue: this is a pool of potential venues. The venue is added to a specific event using the above custom post type

I would like the structure of the site to be as follows:

• / - Gateway
• /london-2012/ - A specific event overview
• /london-2012/speakers - Speakers page
• /london-2012/agenda - Agenda page
• /new-york-2012/speakers - Another speakers page
• etc.

…where an identical page 'types' (eg. speakers page) will all use the same template across the board (I'll just get the parent event from the URL and do a custom query to grab the data for the page).

Can anyone suggest the best way to do this? I believe either a URL rewrite solution or categories may work but I'm unsure about both :(

Update 1

Have sorted this using redirects - for example, speakers pages:

add_rewrite_rule(
  '^event/([A-Za-z0-9-]+)/speakers/?$', //Checked against the global $wp object - $wp->request
  'index.php?page_id=9&event_slug=$matches[1]', //Use WP_Query params to find your page
  'top' //This will superceed the default WP rewrite stack
);

then registered the variable:

add_filter('query_vars', 'my_query_vars');

function my_query_vars($vars){
    $vars[] = 'event_slug';
    return $vars;
}

Answer 1

example.com/event/london-2012/speakers/john-doe

You need an "event" post type and a "speaker post type. The event post type should be hierarchical and should have a sub-page called "speakers" which should use a custom template that displays all the "speaker" post types assigned to that event (see the Posts 2 Posts plugin).

Then you can create other sub-pages like agenda, register, etc.