The answer is China
Yes, it's absolutely proper for the groom's aunt (and/or the bride's aunt, also) to host a bridal shower. The main ones who shouldn't host bridal showers are the parents and grandparents of the bride and groom.
the bride
They are not obliged to do this, but if the Mother of the Bride is in reduced circumstances , and the Groom's parents can afford it, it would be a lovely Bride's Gift from her new in-laws.
No, the maid of honor or bridesmaids do not have to send a note of thannks to parents of the bride.
I only know of Judaism doing this: 1. BOTH parents escort the groom 2. BOTH parents escort the bride 3. ALL brothers and sisters take part in the wedding party 4. Grandparents - even great-grandparents - can either stand onstage or sit onstage in chairs
The relationship between the bride and groom's parents are 'in-laws.' It's an extension of family through marriage.
No.
The parents of the bride are very hapy.
Most guests already know who the bride and grooms parents are and some weddings have a receiving line where guests congratulations the bride, groom and both sets of parents. If there is no receiving line then no, the bride and groom do not introduce their parents. The father's of either side may wish to make a toast to their new daughter-in-law or new son-in-law.
Traditionally, the bride's parents have paid for the wedding, but this is much less adhered to nowadays. It is quite OK for both sets of parents to contribute if a mutual arrangement is reached, or for the bride and groom to foot or partially foot the bill.
There are many things that can be written in a wedding card from parents of the bride. The letter should include well wishes for the marriage.
Usually the bride. But I don't believe the rules are set in stone. Both the bride AND groom can do it. Bridal party can help too. The parents are paying for it. Isn't that help enough?