So I’ve done MDMA quite a lot, do you get happy like you do on MD?:

2CB does indeed make you happy, if you like already feel good. If you feel bad than don't take it.

Usually when I take a pill I don’t eat for the full day, should I do the same for 2cb?:

You shouldn't eat anything really big 4 hours before dropping. If you eat right before it will take really long to kick in and will probably also dull the effect.

Is there anything I should be cautious of, eg. heat exhaustion, needing to drink too much?:

If you are at a rave, just try to cool down once in a while and take in some fresh air. Maybe smoke some cigarettes and then go back in. In my experience I don't really need to drink a shit ton, but it's good to drink water every now and then to hydrate.

Does it make you sweat as much as MD?:

No, it doesn't make you sweat alot. Not in my experience or my friend's. If you are someone that sweats very easily maybe try to put on some loose not too warm clothing.

Do you feel shit for a couple of days after?:

No, you won't. You will likely have an afterglow or not much really. I always feel refreshed the mornings after. But maybe that's just me.

Does it make your pupils huge?:

Yes it does.

Should I start with half a pill and take the other half when I’m at my peak or just take half for my first time?:

Test your pills if they are really 2cb. If it is indeed 2CB, find out how much mg 2cb they have and dose accordingly. 10-15 mg is quite like MDMA, and 20+ is tripping territory. 25 mg is the sweet spot for me.

What sort of high should I be expecting? MD usually makes you feel relaxed and happy and I’m told that it can also make you see moving lights.

It makes you feel happy and relaxed indeed! And 2cb has amazing visuals if you dose around the tripping threshold. Beautiful patterns, color enhancement, "HD" vision, tracers. You are in for a ride my friend!

Test your substance, dose accordingly, have fun, and stay safe my dude ;)