WDW Transportation

Seems like somewhere I heard that they have WiFi on buses…am I just imagining that? This will also be our one and only HS day as the selling out of APRs forced me to give up our backup for HS. We are bringing people who have never ridden ROTR, so the pressure is on. I can see it would be ideal to be at buses at 6:45, but it makes me a little anxious to potentially be on a bus or somewhere out of WiFi range at 0700. Alternatively we could make a beeline for buses immediately after 7. What would you recommend?