Is January a hard date for flowers to be supplied for a wedding?

Hello! My partner & I are getting married in Byron Bay and hoping for 11 Jan 2025. We have been told my a florist that flowers around that time are hard to get as wholesalers close normally until 14 January. We are wondering whether we should change our wedding date because we’d love to have some gorgeous flowers for the day and not a limited supply and ones that doesn’t match our colours & make us feel fab. I am not particular about type of flowers more style of bouquet and colours. The florist we have spoken to can’t really tell us either way if anything will be available and we feel is more focused on booking us than helping us be realistic. Your advice is appreciated!