We are cruising on Oceania in the Spring and we used the website https://molina.imigrasi.go.id to apply for a visa. B213 visa is not in the drop down menu so we applied for a B1 - 30 days visa instead.
The last 2 questions on the application is to download proof that the passport is good for at least 6 months at the end of the visit and proof of return ticket. The 6 month info is already available to them when we uploaded the passport, so we again uploaded a pdf file of the passport. We also uploaded a pdf file with the invoice from Oceania. Hopefully we will receive the e-VOA soon.
P.S. the payment was $33.22 USD