Just booked 2 back-to-back cruises in April '28. 1) Tromso, down Norwegian coast, then Scotland west coast to Glasgow, then 2) Glasgow back-and-forth between western Scotland, Isle of Man and Ireland. 17 nights total.
Good price!
Both cruises no single supplement - a cabin to myself, and got Decks 5 and 6 (high decks; changing sides to be landward on each cruise). I cancelled one other cruise I had paid deposit on, and lost just $250 'rebooking fee'**; that cruise had a couple of discounts that Ponant honoured and transferred to the new booking.
**
@Quickstatus you once asked about cancellation cost timings. Here it is:
Maths: the discounts apply on the previous line's total, but separately for each cruise so amounts won't apply evenly to previous total:
Cabin total, no discounts if dual occupancy $63,000 ( = 'rack rate')
Single fare allowed, so running total $32,820 (again, not exactly half as the 2 cruises don't have the same price)
30% and 25% early booking discount on the 2 cruises, so running total $24,623
10% 'commercial gesture' - transferred from cancelled cruise - compo from disruption to a previous cruise, running total $23,011
20% discount for back-to-back booking on each cruise, so running total $18,881
5% 'buy on board' discount. This was carried over from the old booking, that I made while on board a previous cruise#, running total $18,056
10% discount for my 'Grand Admiral'

status, so final total
$16,487 - less than $1,000/day which for these Ponant small ships is excellent value.
Already paid a $4,500 deposit for the cancelled cruise, which is more than the deposits for these cruises, so about $500 comes off the amount to pay 90 days before the cruise, so now about $12,000
You could probably take another 18 months of inflation % off as well, as not paying any more until January 2028.
# Surprised they transferred that!