How to Use Vet My Itinerary to Catch Problems Before You Travel

The 80/20 Problem with Travel Planning

AI-built itineraries get about 80% right immediately. The structure is sound, the geography mostly makes sense, the pacing is reasonable. The problem is the 20%.

That 20% is where trips break. The museum closed for renovation two months ago. The train only runs three times a day on Sundays and you have a Sunday connection. The "short walk" between neighborhoods is technically correct but requires navigating a highway on-ramp. The restaurant you have on Day 4 is only open for dinner, and you have it scheduled for lunch.

None of these are obvious from a list of days and places. Vet My Itinerary is built to find them.

What It Actually Checks

The vet runs your itinerary against several categories of common failure:

Transit time realism. The single most common itinerary problem. Google Maps gives you the fastest possible route in ideal conditions. The vet adjusts for tourist area congestion, transfers, check-in/check-out time, and the general reality of traveling with bags. If you have 45 minutes between a checkout at one end of the city and a museum opening at the other, it flags that.

Opening hours and closures. Cross-references your scheduled activities against known hours, seasonal closures, and weekly closed days. This catches the classic "arrived at the market on a Monday" problem that afflicts at least one trip in three.

Day sequencing. Looks at whether neighboring days make geographic sense. If you're doubling back across a country to see something you could have combined with an earlier day, the vet suggests restructuring.

Seasonal and timing issues. Some things are spectacular in one season and disappointing or inaccessible in another. If you're going to Patagonia in December expecting hiking weather and you'll be in the middle of shoulder season with 50/50 conditions, that context is worth having.

Pacing. Are you trying to do six things on a day that has a four-hour train in it? The vet calculates approximate activity hours and flags days that are mathematically implausible.

How to Run It

If your itinerary is built in Voyaiger, there's a Vet This Plan button on your itinerary dashboard. Click it. The scan takes 20–30 seconds.

If your plan is built elsewhere — in a spreadsheet, a Google Doc, a notes app — you can paste it in at voyaiger.com/vet. It accepts plain text, bullet lists, or structured day-by-day formats. The AI reads it.

Reading the Results

Flags come in two levels:

Critical — things that will likely cause a real problem. A transit time that's impossible, a hard closure, a border crossing that requires advance booking you haven't done. Fix these before you book anything around them.

Advisory — things worth knowing that might not break your trip but could significantly affect your experience. The popular site that gets overwhelmingly crowded on weekends. The neighborhood that has excellent restaurants but nothing opens until 8pm. The hike that's doable but exhausting immediately before a long travel day.

Advisories are context, not commands. Read them, decide if they matter to your travel style, and adjust or don't.

Use It Like a Second Opinion, Not a Verdict

The vet isn't a final authority. It's a second opinion with better information.

It doesn't know your flight loyalty status, your personal pace, or that you specifically want to be in that market at dawn even if it means a brutal transit. It doesn't know you've already confirmed the reservation, or that you're fine with a long day because you're an early riser.

Use it to catch the things you missed. Ignore it where you made a deliberate choice. The goal is to get ahead of the genuinely avoidable problems — not to hand your itinerary over to an algorithm.

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Built your plan somewhere else? Paste it into Vet My Itinerary — it works on any itinerary format, not just plans built in Voyaiger.