In Reply to: Accidently booked 31 days posted by swoop on Sunday, 5. October 2008 at 20:12 Bali Time:
you have 3 months to use the visa once it has been issued.
If you don't use the visa within that 3 month period it will no longer be valid.
I think it will cost US$20 per day for every day that you overstay a visa and the immigration will probably blacklist you with a 12 month ban from entering the country.
The cost of a 60 day visa works out to be the same cost as what a 30 day visa + the fine for overstaying 1 day will be.
I'd say that you'd be better to get the 60 day visa and then you won't have to worry about any problems with immigration.