It has been over 15 years since we sailed RCL - now we are going with grands, ages 8 and 12. I am a bit shocked when I look at "excursions" in the above ports to see mostly pricey cabana options. Can we just go to the beach and there will be shady places to sit? rent snorkel gear and wade in? lunch served? Are all the slides and such on the ship free? if you stay on the ship when it is at the beach, will the slides and such be operating on the ship. Should we purchase activities on the ship ahead of hand. Things seem more complicated than before😒and I want the grands to have a good time! THANKS for any info!