I can see OP's point about shopping daily saving money although it is probably because like me meal-planning simply wasn't working, in my case due to an arsey dh wanting to eat x or y on a particular night rather than what needed to be eaten that day.
We now have basic stuff bought in an on-line big shop session. (Toiletries, pet food, loo-roll, kitchen roll, long-life groceries eg cans etc) Fresh stuff with a short shelf life is bought every couple of days from the very good local supermarket which is fortunately on our way home and next to a petrol station. I only buy enough to make what we need or I freeze the extra raw goods as dh has an irrational dislike of leftovers of most types (His mother gave him and his brother food poisoning (more than once !) from the over enthusiastic use of leftovers).
Since adopting this shopping strategy we have wasted far less food as we are not tempted by bogofs on non-freezable fresh stuff possibly going off before it gets used and other stuff being forgotten at the back of our large fridge and also going manky.
As a stategy to avoid waste it has definately worked for us, we can now stick within our rubbish bin fortnightly collection limit and still have spare room in the wheelie bin.
OP is however being unreasonable with her irritation at the changing room "closure for the duration". All businesses need to make cutbacks at present, the recession is far from over (despite what GB wants us to believe, there will be pain all round when the public sector budgets are cut) and this seems a reasonable area in which to make savings for a short period of time.