This is the way I play most of my characters.
* No spells
* No scrolls
* No potions
* No Shouts
* No Alchemy
* No Enchanting
* No use of pre-enchanted weapons, armor or jewelry
* No map-based fast travel
My characters sleep, drink, eat and bathe regularly. How often they do these things varies, depending on the character. They take their clothes or armor off when they bathe or go swimming. They use gear looted off enemies if it is appropriate for that character to do so. They smith if it is appropriate.
Most of them put on town clothes when they are in town. Those that change clothes usually get out of sight when they do it so no one will see. They mostly travel on foot. When they travel on foot they walk about 70% of the time and run about 30% (depending on the physical fitness of the character). After combat ends my characters walk for a time, to simulate being exhausted from the effort of fighting.