Are there any cross-border mobile service plans that focus on supporting event attendees traveling across multiple countries?

Yes. There are cross-border mobile service plans aimed at travelers and event attendees moving across multiple countries, though they’re usually marketed as travel eSIMs, regional roaming plans, or international data plans rather than “event attendee” plans specifically.

Common options

• Regional eSIM plans: Coverage across a set region like Europe, Southeast Asia, North America, or the Middle East. Good for attendees hopping between countries during a tour or festival.
• Global roaming plans: Higher-cost plans that work in many countries worldwide.
• Temporary event/short-term plans: Some carriers and eSIM providers offer 7-day, 15-day, or 30-day bundles that fit conferences, expos, sports events, or multi-country trips.
• Enterprise/event connectivity packages: For organizers, some telecom and connectivity vendors offer attendee Wi‑Fi and mobile connectivity bundles for international events.

What to look for

• Countries covered in the region
• Data-only vs voice/SMS
• 5G availability
• Fair-use limits / throttling
• Hotspot/tethering support
• Ease of activation via eSIM

Providers to check

Examples include:

• Airalo
• Holafly
• Nomad
• Ubigi
• GigSky
• Some major carriers’ international roaming add-ons

If you want, I can also help you find the best options for a specific event route, like “France + Germany + Netherlands for 10 days,” or compare eSIM plans by price and coverage.