I'm open 7am - 5 pm.
I offer FT, 2-day PT or 3-day PT. PT is only on contracted days; any additional days are extra. I have 3 age tiers for each: 0-2, 2-5 & 5+.
I also offer a monthly flat-rate option for each age tier that's a little cheaper overall than paying weekly. IMO it's worth it to only have 12 payments to keep track of.