My hubs worked yesterday and was off today, plus we were scheduled to help out with the pony rides today... otherwise we definitely would have gone yesterday!
The chicks are adorable, sorry to hear you're having some health issues with them. We had 2 waterers in with our shipped meaties, one had Apple Cider vinegar added, the other had Nutridrench added. Any chicks which seemed 'off' get a spritz of BluKot on their back to mark them and they got spoon fed/dropper fed a couple cc's of a mix of apple juice, brown sugar and Nutridrench every couple of hours. Usually it would only take a couple of shots of the good stuff and they would be back to normal.
Edit to add... I do know that meaties are prone to pasty butt if they are too warm, make sure that the brooder has enough room to allow them to spread out and have a cooler area if they want it. We usually heat one end of the brooder area and put the food and water in the cool end.
I did put some rooster booster electrolyte and probiotics in their waterers. Their brooder is outside, so they have plenty of cooling off areas., that's why I assumed the pasty butt was shipping stress related. We are on day 4 now, so hopefully we are all good from here on out.