Free Spins

Free spins look simple until the rules start biting. A casino can advertise 60 spins, 100 spins or a full welcome bundle, but the useful part is hidden in smaller lines: which slot, what each spin is worth, whether winnings have wagering, and how much can actually be cashed out.
I do not treat a bigger spin count as better by default. Fifty spins on a clear slot with fair withdrawal terms can beat 200 spins with a tiny value, short expiry and a max cashout that kills any decent win.

What makes a free spins bonus worth claiming?
The first check is the slot. If the offer names Sugar Rush, Razor Shark or another exact game, good. If it says “selected slots” and leaves you to find the list after registration, that is weaker. A bonus should not feel like a scavenger hunt.
Spin value matters too. A large number of spins at a tiny stake can be less useful than fewer spins with a normal value. Then comes wagering. Some no deposit spins only require wagering on winnings. Others attach a full bonus multiplier and a cashout cap. Read that part before you play, not after a hit.

No deposit spins and welcome spins
No deposit free spins are best for testing a casino without sending money first. They are also where casinos like to add tight limits: short expiry, one eligible slot, country blocks, KYC before withdrawal, and a max win cap.
Welcome-package spins are different. They usually sit behind a deposit and may arrive over several days. That can be fine, but check whether missed daily drops are lost and whether the deposit bonus slows withdrawals.

Promo codes, expiry and KYC
If a promo code is required, copy it before registration. Some casinos will not add the offer manually if the code was missed. Also check whether the code is public, email-only or tied to an affiliate page.
KYC can still appear on a free spins win. That surprises new players, but it is normal. If you want to withdraw, the casino may ask for identity, address or payment ownership checks. A good casino says this clearly before you claim the bonus.

My quick read before claiming
I would claim free spins only when the casino names the slot, shows the spin value, explains wagering, gives the max cashout, and does not hide withdrawal rules behind vague wording. If any of those pieces are missing, the offer might still be fun, but I would not treat it as a strong bonus.