DALLAS, 2015-4-9 — /EPR Retail News/ — Bring your carafes … beakers … goblets … jars … or anything else that could even remotely be considered a cup to a 7‑Eleven® store this Saturday. Then fill it up with … Slurpee® deliciousness. 7‑Eleven is kicking off Slurpee season on April 11 with BYO Cup Day. Slurpee-lovers are invited…