I am terribly sorry if I am at fault for asking a question about your observation of other ill adults in the crowd. I was asking for my own benefit; not being critical of you. I know that sometimes kids can be nauseated or even puking, but if you try to get them to rest in bed, they are bouncing off the walls. There is no proof your child had something contagious. Therefore, I do leave it to you as the parent to decide how to handle that. I understand the difficulty the split stay caused in that you did not have the option to stay in the room even if you thought that would be preferred in an abundance of caution. In fact, the parks do have access to some modicum of medical consultation at their first aid stations had you needed that. So, I support you.
The attacks are unwarranted, both against nuhusky and myself. Some posters assumed I was too ignorant to evaluate the veracity of OP's anecdotal observations and advice from a parent who, in their uninformed opinion, would willy-nilly, without thought, haul a possibly contagious sick kid to the parks and make a bald, unsupported statement that the majority of the crowd was also sick. (Like I expected she would stop and make a specific count or I couldn't possibly believe anything she said. Ridiculous!) I didn't read her comment that way. Anyway, such a "majority" comment might have gone to the weight or veracity of the observation in how widespread it might be (a minor point at best). The observation I was interested in was the existence of the base fact that there were numerous symptomatic people in the crowd. I assure my attackers, I am not ignorant. I have a doctorate and worked well over 30 years in my field; working with facts, issues of veracity and whether evidence was trustworthy and reliable. I understood OP and her point about split stays leaving her "homeless" for some hours. I also picked up on something she observed that was of particular interest to me. So, in my take-away OP is not a bad mom and I am not ignorant. We both shared some important thoughts. I think perhaps some irritated posters should exercise some thinking before posting and kindness. That would be the remedy for this kerfuffle.
In the meantime, if you have a split stay, could you ask the resort that you are moving to to allow early check-in for a small fee? I understand late check-outs are generally denied, but early ones when you have a split stay and a small child might be accommodated. Their housecleaning services do start very early. Some people leave pre-dawn for the airport. They would likely have some rooms ready by normal check-out time. If they get sticky and say you have to pay for another whole day, well then that's that. But, it wouldn't hurt to ask.