Hey rob, i also have trouble with my feet,orthotics in my work boots help. Custom molded.
For the trip to vegas im trying out new shoes, skechers. They are much better than any shoe i have had in years, some sort of dense foam insoles.
Feet this time are non issue, its my hips that are giving up.
some cool stuff you are working on, hope you can hold up without abusing your body too much.