DCL pricing is the opposite of most other cruise lines. On other lines, as you get closer to the sail date, rates tend to go down, DCL rates go up. The vast amount of the time, the cheapest time to book is when the rooms are released.
There are a variety of verandahs on DCL ships (which ship are you looking at)
A standard has a clear, low, wall on it
A whitewall has a solid low wall on it
A navigators has an opening, but is not like a deck rail, it is more like a giant oval porthole with metal all around it. It's kind of hard to describe, just google a picture.
As far as categories are concerned, a lower category is "better" and more expensive. When you run out of numbers and get to letters, then you are into big bucks
11: Standard Inside Stateroom
10: Deluxe Inside Stateroom
9: Deluxe Oceanview Stateroom (with Porthole)
8: Deluxe Family Oceanview Stateroom
7: Deluxe Oceanview Stateroom with Navigator’s Verandah
6: Deluxe Oceanview Stateroom with Verandah
5: Deluxe Oceanview Stateroom with Verandah
4: Deluxe Family Oceanview Stateroom with Verandah
V: Concierge Family Stateroom with Verandah
T: Concierge 1-Bedroom Suite with Verandah
S: Concierge 2-Bedroom Suite with Verandah
R: Concierge Royal Suite with Verandah
When you start added letters after numbers, such as 5e, you are mostly breaking things down by location on the ship. A letter a is usually a higher deck than a b in the same category
For example, on the Dream
- Category 5A: Decks 9 and 10
- Category 5B: Deck 8
- Category 5C: Deck 7
- Category 5D: Deck 6
All the same layout, just different decks (and maybe different prices)
I believe a category 6 is a whitewall verandah and a 5 is the clear wall.
-dave