Yes, you can still drink, in moderation, not a sloppy drunk.

Yes, you can absolutely drink while on it.

I agree with Hillhutch,I find alcohol has a stronger effect on me and quite often brings on night sweats but i do enjoy a drink.

Yes, alcohol can be consumed

Well, ya gotta try and see how it affects you. I feel when I was on Gilenya, my tolerance was low. I typically always was a lightweight, but one beer felt like 2 and so on. Its just become something I don't really do much of anymore.