Yeah I'm super confused by this post. Bambini does rolling admissions based on availability and their long waitlist (at least at the Mt Vernon location, not sure about Federal Triangle, there's also a new center opening up at 20th and M sometime this year, but as far as I know, no specific timeline has been given)- it is also a daycare not a preschool. Sure, it's Spanish immersion and they start a "preschool curriculum" at age 3, but as far as I know people don't choose to go there as a preschool in the traditional sense. They have their kids there for daycare since infancy and keep them there for preK years or move them elsewhere.
Point is, don't think this is an apples to apples comparison. Do you want Spanish language, but may be more "daycare feel" than preK? Or slightly-Jewish curriculum but sort of more traditional preK (although I'm sure people will argue because it has all day option is "NOT A PRE-K")?