Any idea about the tentative interview date? If it don't fall far off, its better to wait and explain the things in person because the bad thing about the letters/e-mails is that they don't have any context or post text.
If you are not sure about the interview date yet and you are certain about your mentioning of the marriage date correctly in the application while the one on notes is not coinciding with your provided date, you can surely request the VO for review. I am of the opinion that wearing of clothes on marriage or upon any occasion is one's sole choice and personal decision, thus you can also argue politely with the VO's comment about it - better having a solid reason like inclination to simple dress, promotion of simplicity by being in unconventional dress etc (I am writing so assuming that you was dressed simple).
Further I second the words of Bubbles87 that "If you give more detail of how your wedding was done, maybe someone will be able to give a good suggestion as to how to encounter this..."
During the process of my own immigration and sponsorship of my family; I have practically evaluated that "offence is the best defense". Using appropriate and polite words - with out challenging some one's authority & prestige, one can certainly disagree and challenge the decision.
Kehtey hein "peer putter nahi daye ga par nooh tey nahi rakh/kho lay ga" (viz. a closed mouth catches no flies 8))
