Open questions

What is unresolved, and what each one costs. Close these in the decision log and update the to do list.

Gating everything else

What happens on New Year's Eve

Approach is decided on the New Year's Eve page, nothing is ordered. The 2026 takeaway menus do not publish until late November, which means this cannot be closed before then. Cost of being wrong: up to $293 each, the difference between the potluck and the St. Regis gala.

Pujol's booking window

Not on OpenTable, and nobody knows how far ahead they open. This is the birthday dinner and the biggest blind spot on the trip. Cost of being wrong: the birthday dinner, which has no substitute at the same tier that is also bookable.

Em's holiday release

Tock says "Em has not opened reservations for 2 ene." Probing shows 19 December open and 31 December not, so the holiday week is withheld rather than sold out. Nobody knows the release date. Phone +52 55 6450 1302.

Whether the balloon flies on 2 January

No operator site confirms holiday-period operations, and no 2027 pricing is published anywhere. 2 January is a Saturday in the busiest week of the year, which is when balloon operators fill first. Cost of being wrong: $211 each, and the centrepiece of the birthday.

Money

The Fives environmental tax

Sources conflict badly, from under $25 for the stay to $270. One email to reservations@thefiveshotels.com settles it. Spread: about $41 each.

Whether the 32 percent Fives discount survives to booking

And whether it stacks with the 5 percent loyalty discount. Spread: about $38 each on the loyalty discount alone, more if the promotional rate expires.

Tulum beach club day

Unpriced. Table minimums in early January have never been quoted, so there is no per-head figure. Three hours of driving round trip. May not survive on its own merits.

LAX origin

Unpriced. If anyone is flying from Los Angeles that is a separate search, and LAX to MEX has far more Delta frequency than Detroit.

Whether the one traveller leaving early takes a connection home

The MEX to DTW nonstop is $1,893 and connections that day run $774 to $956. Saving: about $1,040. This was two people until 12 October; now it is one. They have not been asked.

Logistics

Firm yes or no from all 7

With a date by which a maybe becomes a no. Nothing non-refundable should be signed before this.

Silver Medallion benefits on these routes

Whether complimentary Comfort+ extends to Mexico at Silver, and the international checked-bag allowance. Priority boarding and waived same-day change fees are safe. At Silver the group is lowest upgrade priority, so do not count on it on a sold-out holiday A319.

Four venue addresses never resolved

Minutito, Cursi, Fueguia 1833 and Salazar were on the shortlist and none has a confirmed address.

Whether a taquiza provider will take a party of 8

Most Mexico City providers set a 50 person minimum. One phone call settles it.

The website

Settled. The repo is public and the site is live at ryankolean.github.io/happy-birthday-krysta. Public was the choice because GitHub Pages from a private repo needs a paid plan, and the group needs to be able to open it.

Built by scripts/build.mjs from data/*.yml and docs/*.md, deployed by GitHub Actions on every push to main. No framework, two dependencies.

What this costs us

Everything in this repo is world readable and permanent. Git history cannot be meaningfully cleaned after the fact.

The site sends noindex, nofollow and ships a robots.txt disallowing everything, so it stays link shareable without being searchable. That is a courtesy to crawlers, not a security control. Anyone with the link sees everything.

What must never be committed

Street addresses, confirmation numbers, record locators, card details, full legal names, dates of birth, passport numbers, travelers' personal phone numbers, home addresses. Those live in private/, which is gitignored. Template at private-template.md.

Published business numbers and public listing URLs are fine.

Still open

Whether to put the exact Airbnb address on the site once booked. Right now only the listing URL and the neighborhood are published, which is the right line. Resist moving it.