Ballestas Islands only
The listing says 3 hours, with hotel pickup and drop-off, bus or minibus transport, a speedboat and a guide. Tickets and the tourist tax are paid separately, in cash and in soles. It works if what you want is the boat ride and you do not need to tour the reserve by land on the same day.
National Reserve only
It takes 1 hr 45 min by bus or minibus with a guide, with hotel pickup and drop-off. The Reserve boarding fee is paid separately, in cash and in soles. It is the shortest outing and does not include a boat ride, so you will not see the islands from the water on this option.
Both in one trip
It lasts 4 hours and includes bus or minibus, a speedboat and a guide. Entry to the islands and to the Reserve, plus the dock tax, are paid separately in cash and in soles. Choose this one if you do not want to make two separate trips and prefer to get everything done in one morning.
If the weather does not cooperate
According to the listings, when bad weather, wind or a port closure prevents seeing the Ballestas, the Blancas Islands are offered instead. If you do not accept the change, there is no refund. Read this carefully before booking and bring cash in soles for the fees, even if sea conditions change.