i hardly go into stores to shop. if i do i use the cart and take a folding cane.
i started out using a cane. then i got a rollator (a walker with a seat). that's been very helpful because if i get too tired i can sit a few minutes and then con't.

i also have a van with a lift in the back and have a scooter. if i really want to go shopping i do use the scooter. i've found that if you smile at people and communicate your needs they do the same.

i don't bother with people that aren't friendly. it's not me, it's them.
when i first got my handicapped sticker i put off using it. but then i had to and i havn't looked back.

you find that using aids to save energy is what it's all about. saving energy lets you do other things that are more important. you just get used to it. and so do your friends and family.