Three sub-topics, one consistent shape: Menton is base camp, not the activity zone. The single 3★ in town (Mirazur, Mauro Colagreco) sets the only fixed point in the weekend; the rest is logistics around it. There is no 2★ anywhere inside the commune — the closest sits a 14-minute drive west at Hostellerie Jérôme in La Turbie [1] — and no IT conference uses Menton’s Palais de l’Europe, which books medical and architectural congresses instead [2].
The coastal TER line is the through-thread. Monaco is 10–11 minutes away with 17 trains a day [3]; Ventimiglia 9 minutes east [4]; Nice ~35 minutes [5]; Cannes ~1h09 [6]. That same line connects every interesting layer of the trip — the Le Corbusier coastal path at Roquebrune-Cap-Martin [7], the reopened Jardin Exotique de Monaco [8], and every tech event reachable from base camp (Ready For IT 2–4 Jun in Monaco [9]; WAIB Summit 9–10 Jun [10]; WAICF Cannes in February [11]). The single-line constraint shows up as a hard edge though: last-train-back times east of Nice tighten around 22:30–23:30, so Cannes evening receptions or WAIB yacht-club dinners force either a taxi (~€80–€150) or a one-night displacement.
Booking discipline is the dominant operational risk. Mirazur’s Universe Menu is €450 at both lunch and dinner with a €450/person no-show fee inside 15 days [12]; the booking system opens future months in batches months ahead [13]. Three of the six “Jardins Remarquables” are visitable only by phone or online appointment (Maria Serena [14], Fontana Rosa [15], Les Colombières [16]) and a fourth (Clos du Peyronnet) is Fridays-in-September-only [17]. Plan the dinner first, then back-fill gardens around it — not the other way round.
Two time-sensitive realities to absorb. The headline Musée Jean Cocteau Severin Wunderman is shut — seven years on from Storm Adrian, the mayor’s own line is no reopening before the end of the decade [18], so Cocteau in Menton means Le Bastion [19], the Salle des Mariages and the Wunderman rotation at the Palais de l’Europe (closing 27 Aug 2026) [20], not the headline museum. And the tech calendar is windowed: genuine Riviera tech weekends only land in Feb, Apr, Jun, Jul and Oct [21] — outside those, the conference-bolted version of this weekend doesn’t exist and the brief collapses to gardens + dinner.
The sharpest open question: which side of the dinner you put the day-trip on. Mirazur’s hillside-and-Italian-border view is the more singular at lunch; the Universe Menu is the same €450 either way [22], so the trade is daylight-over-the-garden versus a free Saturday for Sainte-Agnès or the Roquebrune coastal path [23].