If you like Vichy I'd go with that. You can't sadly cleanse spots away, you will need a treatment product and benzoyl peroxide is v effective.
However if you are set on not having it, you can stick to the Vichy range and have something like their Normaderm cleanser and some Vichy Hyaluspot. I wouldn't pick the micellar as it won't have any special powers over any other micellar water and you want something v bland that is not going to strip you skin in any way - the 3 in 1 cleanser would prob be better but the classic recommendations are Cetaphil or Avene Gentle Gel Cleanser.
Bear in mind though that this is NOT going to sort you out for a wedding on Wednesday as controlling acne is a longterm process and you shouldn't be changing everything all at once. And as acne is an inflammatory condition, stating a treatment can initially make things worse rather than better- you need 6 weeks of regular use to assess if something is working or not.
So what I would do in your situation is just swap the cleanser and put some Vichy Hyaluspot on the big spots several times a day to try to make them as small as possible come Wednesday (I love this product, it really works) and do a makeup cover-up job.
If you haven't watched Lisa Eldridge's youtube video on makeup for acne then you should - you are probably stressing far too much about your pores as well, stand back from the mirror the distance someone else would be and see how visible they are then? Do you go around all day noticing other people's pores? Usually people with oily skin have amazing glowy skin in between the spots but have lost confidence.
Next - after Wednesday - you need some salicylic acid on your skin. This dissolves in the oil and exfoliates the black stuff out of your pores clearing up the blackheads, so making your pores look smaller, and preventing you from getting spots. If you use a good salicylic product daily there is a fair likelihood you will stop getting the spots at all or at least get a lot fewer and the blackheads will def go. A mild version to start is Clinique Mild Exfoliating Lotion (this almost but not quite works for me), budget option is Clearasil pads, Nip Fab Dragons Blood pads are v popular here, the gold standard and my favourite by far is Paula's Choice 2% BHA which clears up my acne without fail. Sadly Vichy Normaderm lets itself down here and doesn't have a great all over face product which is a shame as the rest of the range stupid micellar water aside is great.
Finally you then want a nice oil free moisturiser and again the Vichy Normaderm ones are lovely.