Verizon 4G stinks at WDW. I would suggest staying off of the sewer that 802.11 in 2ghz at the parks (oh how I wish there was a way to force 5ghz on an i-device). I would stay on Verizon 3G. 3G is reliable in the parks and works fine with
MDE. If you have ATT HSPA or LTE you will be golden. The ATT sites there have more capacity (OC48) than most ISPs.