According to the files above Premier Fares:
Inside OV Balcony DLX BA Mini Suite Res collection Suite
$3,319
$4,519
$4,519
$5,019
$5,619
$6,269
$9,069
Plus $135 Port fees & $175 NCF
If the high end spirit you want in the cocktail is included within the Premier price limit ($20), then there would be no upcharge for the cocktail even if it had 2 or more items within the limit.
Haugesund is easy accessable as long as you don't mind a hike over the bridge, which is quite a steep slope to get to the Middle.
On Our Walking tour in September, we started with 30 people, but by the time we got over the bridge, we were down to 18.