Why boarding changes the vaccination calendar
A cat who boards twice a year lives on two calendars at once: her own health schedule, and the admission rules of the facility that takes her. Boarding brings cats into shared airspace and close quarters, so facilities set vaccination requirements to protect every animal in the building, and they typically want vaccinations current before a stay begins — not given in a rush the day before, when protection has had no time to develop and any mild post-vaccine tiredness would land on top of the stress of arrival. Planning around that reality is the whole of the follow-through your vet is asking for.
Work backwards from each stay, not forwards from today
Put both boarding periods on your calendar first, then count back. Ask your clinic how far ahead of a stay they want her boosters given, and book that appointment as soon as the trip itself is booked — busy practices fill up in holiday seasons, which are exactly when boarding peaks. This backward planning also spreads the work: if more than one vaccination is due in the same season, your vet can tell you which must precede the stay and which can safely wait until after she is home, rather than everything landing in one stressful week.
Know what the facility will ask to see
Before each stay, confirm directly with the facility which vaccinations they require for cats and what proof they accept, because policies differ between businesses and can change. They will want to see her record — what was given and when — at booking or at drop-off, and discovering a gap at the door, with your own travel leaving the same day, is the failure this planning exists to prevent. Keep a copy of her current record at home as well as with the clinic, and check the dates yourself a few weeks out rather than assuming last year's paperwork is still in date.
Use the pre-boarding vet visit well
The booster appointment before a stay is also a useful health checkpoint for a cat about to spend time away. Mention the boarding dates to the vet, ask them to note anything the facility should know — a sensitive stomach, a medication routine, how she handles strangers — and confirm her parasite prevention is current, since facilities commonly require that too. If she is a nervous boarder, raise that at this visit rather than at drop-off; the clinic may suggest settling strategies you can start at home, like carrier practice and familiar bedding, in the weeks before she goes.
When plans change, tell both the clinic and the facility early
If a trip moves, gets cancelled, or a new stay is added at short notice, revisit the vaccination plan rather than assuming it still fits — a booster timed for a stay that moved by two months may need rethinking, and a surprise stay may come before a due date you were counting on. Call the clinic first for what is medically sensible, then the facility for what they will accept. Keeping her vaccine dates, clinic notes, and boarding details gathered in her Pet Passport on KinsLe means that when plans shift, you can see the whole picture — what she has had, what is due, and what the next stay requires — in one place.