What I've done in the past:
week before show - stop using any moisturizers, lotions, etc. on skin
tuesday - last tan
wednesday - in the evening do you first coat of protan. before you put the coat on though, take a VERY COLD SHOWER. this will close up your pores so you don’t get all blotchy looking. after the shower, exfoliate your whole body vigorously - you want to be as dry and scaly as possible. Then apply the first coat of protan (i just dump it in a bowl and apply with a washcloth).
thursday - do 3-4 more coats of protan, taking a very quick shower after every 3rd coat or so (just long enough to get your body wet, and rinse off any buildup of protan residue / cake - maybe 15 seconds tops).
friday - same as thurs.
saturday morning - 1 coat of jan tana competition tan (this goes on kind of weird - i would wear dishwashing gloves to do it. you really need to rub it in good). no shower after the jan tana.
backstage while warming up - either the protan muscle sheen product, or Pam spray oil. if you use the pam, just spritz it on and lightly towel off - you don't want to be super shiny - you just want a sheen.
This year I'm going to try the Jan Tana mousse though.. I've heard a lot of good things about it. The above protocol is great, but pretty labor-intensive.