Yes, there are still protections in alternate law. In fact, there is 2 kinds of alternate law.
I will call it an alternate law and alternate law without speed stability (my own description).
Both of them have load factor protections. You loose load factor protection only in direct law.
The "better" alternate law still have low speed stability and high speed stability. The only difference with normal law is, that it is overridable. If high speed protection in normal law kicks in and you push the stick all the way forward and keep it forward, the airplane will pitch up against your input. If you do the same in the alternate law with speed protection, you have to let the stick go, before it will start to pitch up. So you can override it. But in alternate law without speed stability you don't have low and high speed stability. In both cases you have load factor limitation as mentioned above and also yaw damping (unless you lost yaw damping due to ADR failure.
I hope, it makes sense.