We were fortunate to be on Rotterdam when she returned to Rotterdam for the first time in many, many years. (I think it was HAL's 125th Anniversary year). HAL held the ship in Rotterdam for several days of lunches, teas, cocktails, dinners....parties. We had stayed on in Rotterdam to visit with some friends and enjoy some time in Holland and could see the ship lit up in the evenings when we were out and about.
Before we disembarked, we watched the shore people they brought aboard decorate Lido pool and the work they did was magnificent ..including a huge ice sculpture of the original HAL headquarters building in Rotterdam...where the ship was docked. These talented folks built a Dutch flower garden complete with windmills. So beautiful. We still treasure the photos we snapped.
They brought some huge number like 8,000 people on and off the ship while she was there. I have no doubt everyone had a great time.....and it will probably be repeated this summer. Lucky You!! Enjoy.