The purpose, then, of receiving Holy Communion under both kinds, is not that the faithful receive more grace than when they receive it under one kind alone, but that the faithful are enabled to appreciate vividly the value of the sign. Sadly, this distinction has not always been made clear and some people, when not offered Holy Communion under both kinds, have expressed a sense of bewilderment, even thwarted entitlement, or a feeling that Holy Communion under one kind alone was, to some extent, deficient.
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Every care should be taken to avoid the ministering of the chalice where circumstances suggest ambiguity of reception or a setting where the safety of the contents of the chalice might not be assured.
“Redemptionis Sacramentum” states that where it is difficult to assess the quantity of wine needed for a particular celebration, owing to the large size of the congregation expected that the chalice is not to be ministered.