Washing: use one or two passes with your wash mitt and be done with it - don't keep going over it
Drying: do the blot method using a quality waffle weave towel
Waxing: use a WOWA sealant like Opti-Seal or UPGP, that way you will not have to worry about wiping over the decals with a microfiber or getting wax residue around the edges
I assume your truck is polished, so that should not be an issue for quite some time as long as you only touch it with quality products and tools and use good technique when washing and drying. Claying may prove a bit more tricky. If you must clay, do so very carefully, going around the decals if possible. Hope this helps.