No-one's stopping their business, just restricting it. You have to pay £5 for a wristband. You can only buy booze (be it from pubs, supermarkets or shops) with a wristband. All glass is banned also, so the supermarkets presumably won't be able to sell anything (eg pickles) that's in a glass...
Why not rent out your house if you're going away? My mate is on the route and has rented out her flat for £500 for the weekend (more than her monthly rent).
Thinking of renting out my flat for Brighton Pride, now I've discovered they're sealing off the streets for the weekend and banning...