I often go without a bug net. The truth is that you only need a bug net for the early evening hours. Mosquitos stop flying once it get quite late. I recall a hike I took last summer where I got swarmed every time I stopped walking. But I didn't bed down until quite late and had no problem without a bug net.
If you like to go to bed early then you will be in trouble. If you go to bed late it's not a problem.