Streaming question

I am just curious:

I am thinking about cutting the cord on Dish Network in April.

We upgraded to the 30 gig plan from the 20 gig on or around the 22nd and were now at 66%..  :(

But,  that was before I found a way to cut the consumption of data down.

I have now set Netflix  to use Low resolution, and the picture still looks fine, spotify on low data useage while on wifi, anything that I could change the quality on to use less data, thats what I did.

So I want to know, since everything is on LOW data useage, will we still be able to watch streaming video when we run out of data or will it be like

PLAY~~~~~~~BUFFER~~~~~~~~~~~~~~~~~~PLAY~~~~BUFFER?

Thanks!