A couple of points on this subject of walking through rooms/locations ( caused by Cunard's construction and planning of the QM2 deck layouts) and offending people:
1) Once on the QM2 my friend and I began a walk up the staircase from Deck 8, Pool Terrance. We were headed to the kennels, and were informed by staff that the staircase would get us there. Well, we did not realize that the STEEP outside stairs would not stop on Deck 9, nor on Deck 10. Only until Deck 11 was there a chance of respite and catching ones breath. Even though I was younger then, I needed to stop for a minute or two -- on the stairwell landing -- to catch my breath. Unknown to us, we were now on Deck 11, the Queen's Grill Terrace. While panting to regain our ability to walk up the next steep staircase to Deck 12 (and the kennels), we were approached by a passenger (male) dressed to the teeth at 2 in the afternoon who rerated us, saying "How dare you stop. This is for Grill passengers only. If you don't move off, I will have you removed!" Really? As we stood panting (and only for a couple of minute) I noticed it was sprinkling rain, or so I thought. We rushed off the forbidden deck and arrived on Deck 12, to see the kennel staff spraying down the deck just outside the kennels; apparently a dog had done its business and they were washing it down -- causing the "light rain" on the head of the gentleman who clearly protected his territory and expected class separation.
2) In order for someone with a disability to access the Pool Terrance, they must pass through the Veranda Restaurant. This we had to do many times when my mother (who used a wheel chair all the time) want to attend a sail away party or to sit in the sun by the pool. The only other access would have been up the long indoor staircase from the deck below or to miraculously pass through walls without entering the restaurant.
3) Another difficult walkthrough is on formal nights through the Queen's Room (passengers dressed to the hilt) to G32 in relaxed clothes. Make an awkward meeting of the eyes in the Queen's Room.