If you don't suggest your site it won't get into ODP, unless an editor goes hunting for sites and finds it by himself.
But if you do suggest your site, an editor may come along tomorrow and decide to work on that category and maybe your site gets listed
But patience and understanding are always advised.
It's like planting a tree, choose the soil carefully, place the seed the best way possible, come back in a while and admire the results. But don't sit and watch the tree grow.
[But new gardeners are always welcome to apply and work in the forest]