Does walking help to tone/ lose weight off of thighs/ stomach?

I like walking... I find it relaxing and calming! I have 22 days until I go on holiday and was wondering if I walked a mile in the morning (after breakfast) and a mile in the evening ( after dinner) would it help to tone up my legs and lose the extra bit of fat around my stomach! I'm not too overweight I weigh 119 pounds and i'm 5' 3". I'm also eating more healthy and taking colon cleansers and acai berries!