After my latest TC seizure a few weeks ago I looked on epilepsy.com and found a few posts relating to the effects of alcohol and seizure meds. Apparantly the level of medication drops after drinking to a lower level making a seizure more likely. The levels drop 12 to 18 hours after drinking.
I think the only one who can give you a good answer on how wise it is to alter your RX level in order to drink is your Doctor.
We were told that it would be better not to drink so as not to affect the anti-seizure meds, or to limit the intake to 1-2 drinks occasionally. To us that was a small sacrifice to avoid seizures.
Of course, you are free to do as you wish.