DOC currently has two booking systems – Great Walks and huts, campsites and lodges. You need separate accounts for each system. If you don't already have one, your first step is to set-up a DOC account and upload a copy of your NZMCA membership card for DOC to verify. This can take up to 2-3 days so it's best to set it up before you need to use it. Once set-up you use your DOC account to buy passes, casual stays or book Great Walks and your NZMCA discount will be automatically applied.