You have a week or two to worry about that, so have a practice run and pop a bottle for yourself.
French, white, Nicolas Feuillate Brut Champagne is down from £29.99 to just £14.99.
If wine is more your calling, Codorniu Vintage Rose Cava is at amazing value. A bottle of the soft pink, fruity flavours is just £6.99. Drink up!