I have a childminder and preschool nursery hat on- have two childcare settings. What's the difference?
At both settings the quality of care, attention, food, opening hours, resources et al is identical. The differences are size - one having more kids than the other, and the fact one is in a residence and one is in a commercial setting (which is itself made to be very homely).
Preschool setting only closes 1 week a year, childminder setting used to close 4 weeks a year (tons of notice given to parents), now I have another childminder who works with me, so that setting also only closes 1 week a year too.
Sickness - I've rarely been sick but yes, this is something that you need to think about if using a childminder - having a plan B who you can call on last minute should you get that call that the setting is closed that day. Having another childminder working alongside of course takes away the sickness issue.
Always remember... There are good and bad childminders and nurseries.. And not even necessarily bad ones... Just ones that don't offer what you specifically need as a family eg my settings close at 6... Some parents need till 7... So they won't use me. Not due to any other reason but I do not provide what they need.
Always do your homework - visit childminders and nurseries (some nurseries are very small... The same size as a childminder with assistants setting, plus many are based in a house too if that's your reference). Visit Good and Outstanding settings - oftentimes a Good setting has narrowly missed an Outstanding grading due to a tiny thing eg a form not signed.
Ask tons of questions! Go with your gut feel. You're leaving your child with the person you're visiting... How will your child enjoy being there? Will they be loved and feel secure? Will their nutritional needs be met? Will they be safe? Will they have lots of opportunities to have fun and learning through play? See what the ethos is of the setting - this varies greatly.