If the OP is still here, we sailed in connecting rooms on the Wonder where one connecting room was a 1 BR concierge, and the other was steerage (i.e., deluxe verandah). We had to book that way as there were no other connecting concierge options at booking and no more royals or 2brs. On the classics, there are no class V rooms, so no options but to split the party. This was our first time with anyone sailing non concierge.
To answer the original question, when we contacted shoreside to book our excursions, we asked if we should book a few backups as we wanted to do all of our excursions with our whole family. The thought was if we had a few options in each port, the odds of the whole crew being able to book the same excursion would be greater. Shoreside said that would not be necessary and they booked our whole party for each excursion. They did the same for Palo reservations. No lounge on the classics, and we didn't try to crash any of the special events like the character meet. However, we had sailed with our concierge host before and he did, without any provocation, invite the whole group to attend the cocktail hours (which none of us ever made it to) and send things to the children in our party like treats, popcorn, and such.