My voice is a little hoarse after singing a lot the other night. Best way to restore my voice quickly?

I have about 48 hours until Karaoke night and I have to get rid of this hoarseness.

Rest- thats all your voice will need to recover, its the best and natural way!! Don't sing till you need too.

dont drink milk!!! stay away from dairy products!!! get room temp. heated water and put a lil honey and lemon or just honey and drink away...

Throat Coat herbal tea from Traditional Medicinals,it really works,look it up online

drink lots of tea and also before you sing drink warm water mixed with lemon juice

hot water as hot as you can bear squeeze a lemon in and some honey works a treat

Drink warm liquids...water with lemon...salty things (chips, salt water gargle, etc). Stay quiet until an hour or so before you plan to sing...warm up singing backgrounds well within your range. Youll be fine...
Any other ideas?