My siblings have children under the age of 11 who are supposed to be a part of our wedding, however with current restrictions on guest numbers we won't be able to include them. It's heartbreaking to try to explain, especially when they live in the same household as people who are attending.
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Children under the age of 11 are exempt from wearing face coverings, if they are also a part of a household with people who will be attending the wedding, parents will need to arrange childcare and puts them more at risk by sending them elsewhere or to another household.