I'm from Cincy, my DW from the Boston area. We've driven both via I90-I71 as well as via I84-I81-I80-I71 on multiple occasions. The more southerly route is a little shorter, but the traffic on I84 is a bear thru Connecticut from east of Hartford to Newburgh, and then crowds up again in the segment between Scranton and Wilkes-Barre. There are good services and rest areas all along the way. Going via I90 will entail tolls as has been said, and traffic in the Buffalo area as well as when skirting around the east side Cleveland can slow you down if you hit it at the wrong time of day, but in general it’s not bad. And as you can imagine, services and rest area availability are fine along this route as well. As for my preference, in spite of the traffic on I84, I prefer going via I84 from NE and usually do. It’s a little nicer drive in total in my opinion. Hope this helps.
One last thought, your choice of routes may ultimately depend more on how you can best access the park from I71. Coming in on the I84 route I was speaking of brings you to I71 a little south and east of the SP. Coming down from I90 potentially gives you a few more options for taking some other major roads at a little closer to the park’s entrance. Good luck and have fun on your trip.
Mike and Cindy
FMCA / Good Sam Member
2016 Tiffin Allegro Open Road 34 PA
2010 Pontiac G6