Our research shows that Row W in Section 123 is the second to last row in the section, making these seats fairly easily accessible from the entry tunnel and only requires going down 2 steps to get to your row. Unfortunately we do not have specifics on the width of the aisles or the rows, however the Royals do list a phone number and email address of someone within the organization who you can contact for more information in this matter.

View from Section 123 at Kauffman Stadium
This is the view of the field from Section 123 at Kauffman Stadium.