In Reply to: In your case I would convert to US$ posted by rogervicta on Thursday, 17. September 2009 at 15:18 Bali Time:
If your room has been quoted and confirmed in rp, then pay it with rp exchanged from AUD. If your room has been quoted and confirmed in USD then pay it in USD exchanged from AUD. If you exchange your AUD for USD then exchange those for rp you will end up paying too much. Particularly as the hotel will convert the USD room rate into rp using a very unfavourable rate.