80%+節約する旅行者からの実用的ヒント。
主なポイント
- ルール1:ローミング購入しない。eSIM = 70-90%節約。
- 複数国:地域プラン。
- 旅行前購入、空港でなく。
- シーズン特典探す。
- バックグラウンド使用制限。
結論
これらのヒントで旅行はずっと安く。
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