Decide what the player should gain from the trip
Begin with a conversation between the player, coach and parent. Are you looking for experience against unfamiliar opponents, a particular playing surface, an appropriate step up in competition or an event that fits a training period? Put the purpose into one plain sentence. This gives you something more useful to compare than a tournament's reputation alone.
Consider the age group, category, format and likely playing standard together. Category labels belong to their own competition system; the same-looking label on another circuit is not automatically equivalent. The coach can help judge the sporting fit, but neither a category nor a ranking guarantees a particular opponent, result or number of matches.
Read the current entry information and, where useful, results from previous editions. Old results offer context, not a reliable forecast of this year's field. Find out whether there is qualifying, a consolation event or another format, and which of those the player could actually enter. Do not promise extra matches on the basis of a format the player is not eligible for.
The aim is not necessarily the easiest event. It is a worthwhile challenge within the player's current preparation and the family's circumstances. A local or national event may meet the same learning goal with fewer demands. Going abroad is an option to assess, not a required sign that the player is progressing.