Yes, you can drink alcohol while taking Suboxone, but in moderation. Drinking heavily while also on Suboxone or other sedating medications is probably more dangerous and is inadvisable.
Combining multiple medications that can cause sedation or a decrease in the respiratory drive is also inadvisable. If you decide to drink while on chronic Suboxone, speak to your doctor beforehand and minimize alcohol consumption to as little as possible. A glass of wine at a wedding is okay.