Newbie to Oceania with a reservation question please

what perks do you get with a GV that you do not get on an extended voyage or a B2B2B say

In all honesty, I can't recall the GV specifics (it included things like free laundry and other modified "world cruise perks") and I have none of the prior brochures that listed the grand and extended voyages in separate categories.

However, here's the link to current brochures, which does list "extended journeys" (including one that is just "extended journeys"). It may be that they've eliminated the term "grand" journeys (and the extra perks) without updating the website nomenclature.

https://www.oceaniacruises.com/request-brochure/

We booked next months sailing as an extended journey, in reality a B2B2B. One booking number. No extra perks, just a very good price. Restaurant bookings were 3 specialties per person, equaling the number of "legs" or segments.

After final payment on the ext. journey, we added another leg. Separate booking number, which makes perfect sense as we had already PIF for the ext. journey. I haven't checked to see if specialty restaurant bookings are available yet for the extension. O was unable to send the cruise docs for both, and said we will have to use electronic docs for the extension. Which doesn't bother me at all.

We booked next months sailing as an extended journey, in reality a B2B2B. One booking number. No extra perks, just a very good price. Restaurant bookings were 3 specialties per person, equaling the number of "legs" or segments.

I agree

That is all I have seen as well just a GV that consists of a number of B2B's

like the 80day snowbird specials in the winter

does several R/T out of Miami

They had them this year but looked too boring for us ;)

except being away from the snow it was back & forth in the same Caribbean ports

There were no extras that I saw