Canadian Needs internet in US while in parks and on the road

I'm sure our problem is not unique and seasoned snowbirds should have advice for us. We run a business in Canada and are going to be south for 3 months this year and need to stay connected to the internet. We find the wifi signal in the parks not great. Is there a solution? Should we get a wifi booster for the signal? Can we get local internet at the RV Parks? Are there temporary plans for the US that would keep us connected (not to our phones). Any and all solutions would be greatly appreciated. Thanks.