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Is it worth submitting the articles and photos section to the ODP or am I just wasting my time?
In other words: If that article and photo section is not a website in its own rights I would not submit it.
If that's really the purpose of the site, the editor is surprisingly likely to notice.
My site was just listed (took 10 months), it sounds similar to your site, travel, place specific, lots of unique content and photos, adsense and hotel aff links throughout.
It would seem that trying to get listed is certainly worth it, all they can do is say no...
P.S. I submitted the main URL, I figure if you submit any part of the site the reviewing editor is naturally going to look at the main url anyway.