Hello Seth and welcome to the Cow Audio Forum.
As a sound person, I would lobby against any location that made good dialog matches impossible. I normally tell the director what problems I hear, let him/her hear what I’m hearing in my phones so they can hear the problem, and explain the problem in simple details. If the location can not be altered, you get what you get and try to fix it in post, maybe even with ADR.
The use of sound blankets or other grip gear to minimize the background noise is certainly a possibility. Instead of blocking the sun or other lights, you’re blocking sound. It’s more difficult with sound, but it can help.
Gating may or may no be a good option in post, depending on the amount of background noise.
Yes, adding some noise to mitigate the differences can help, but only so much.
Without knowing the logistical particulars, it’s difficult to say if that would work.
Regards,
Ty Ford
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