I’ve been seeing people say that they’re having XX amount of day guest and XX amount of evening guest. (And the day guest amount has been smaller than the evening guest” I had never seen this before. Is it a limited amount of guests invited to the ceremony and then more invited to the reception?
But in US, if having a small private wedding, or a ceremony for a religion that does not allow non- members in the religious ceremony, it is permissible to have a reception later on for everybody who was at the smaller one, plus anyone and everyone you want for dinner and dancing, or whatever your reception is. What is not right is to have guests for the smaller private ceremony, have no special meal or reception, and send them home before a later reception. ( There may be church members not your invited guests, who attend the ceremony, and only your guests are invited to move on to the reception. That is okay.)
That is the height of rudeness. Unless you are overseas where this is the norm, there is no situation where this is acceptable or polite to have tiers/classes of guests. If someone is invited to the ceremony they must also be be invited to the reception and vice versa. Be prepared for many declines.
Kelly is right. This is a British tradition as they usually have a big breakfast to celebrate (brunch if you will), then a party in the evening. In this instance, it would not necessarily be rude as you would be hosting your guests and those who were there for the breakfast are usually very close to the couple.