Halo Reach: Noble Map Pack isn't free like the other DLC's

Yes you need both maps packs to play those playlists. If he already has purchased the Defiant Map Pack, he needs the Noble Map Pack. That is also DLC to Halo Reach. Once you purchase that, you can play those playlists

http://marketplace.xbox.com/en-US/Product/Halo-Reach-Noble-Map-Pack/c335a588-653b-476b-9f6d-76c500df0e91

the noble map pack and defiant map pack are the most recent ones for halo reach

[quote user="UsR Twisted D"]

Considering buying Reach tomorrow, and have a few questions.

1) Is online play free if you buy pre-owned, or is there a one use code for online? [/quote]

All you need is to be an Xbox live gold member, there's no extra codes required.

[quote user="UsR Twisted D"] 2) I hear there is custom made maps, is this like Halo 3 where you could customize the maps or is it a complete map designer. [/quote]

It's like Halo 3 where you can edit the maps, but the new editing system is much better and easier to use.

[quote user="UsR Twisted D"] 3) Are the user made maps free to download if there is any (above question) [/quote]

The user made maps are free to download.
Here's the link.

[quote user="UsR Twisted D"] 4) What is the DLC like for this game? [/quote]

There are two map packs, the defiant one has two multi-player maps and one Firefight one. The Noble map pack has three multi-player map packs, and in my opinion has the best maps available for the game. Although, Defiant is very good too.

Defiant link,
Noble link.

There have been two Map Packs released for Halo Reach, Noble and Defiant. Do you have both? If you do not have the Noble pack as well, you will receive the message you are receiving.

The three map packs for Halo: Reach,
Noble,
Defiant, and
Anniversary, are completely optional for Matchmaking. You do not need them to play Matchmaking.



However, some playlists, such as the Anniversary Playlist, are restricted to be available to only player who have a certain Map Pack or multiple. The description of the playlist will explain what map packs are needed, if any. Most playlists can still use
the map packs even if they are not needed to play in it.