RERA's real power against builder delays – what's the catch?

Spent the whole Sunday checking out options in New Chandigarh, mostly 3BHKs near potential school zones. My wife is super particular about the kids' safety and school admission, so we're really looking for a secure, family-friendly area. But honestly, I'm getting stressed about the legal side. I'm looking at a project and the builder-buyer agreement seems so one-sided, full of clauses favoring them if there are delays. How do you guys actually verify RERA registration beyond just the number? Are there any hidden red flags in these agreements that most people miss, especially around possession delays? Aur agar builder delay karta hai, RERA mein hamare paas kya real options hote hain? Matlab, is it actually effective ya bas paperwork hai?