Yes, disabling dates would be better. The current form uses conditional laws to show / hide fields based on the date. So, this allows me to show field set A whe

Yes, disabling dates would be better. The current form uses conditional laws to show / hide fields based on the date. So, this allows me to show field set A when dates in July are selected, and field set B when dates in August are selected, and field set C when any other date is selected. Sliders are just one of the ways of inputting numbers. You can have a text field that only accepts numbers.