It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
When flying from Cairns to Tallinn, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Anyone who has been vaccinated abroad can prove they have been vaccinated by presenting a vaccine passport, a copy of the passport, or an officially verified excerpt from a database in a foreign country. The document must be in the Latin or Cyrillic alphabet and in Estonian, Russian, or English and must contain the following information such as the disease against which the individual was vaccinated, the date of immunization, the brand name of the vaccine, the number of doses administered and Information on the certificate issuer (i.e. the CDC).