yes, to be sure that everything is in order and to tell them you love them!
No but it is bad luck for the groom to see the bride before the wedding.
The groom should buy the engagement and wedding ring for his bride to be and the bride to be should buy the groom's wedding band.
The father of the bride and groom can give the wedding gift to them the day of the wedding at home or, they can leave the gift on the gift table at the wedding reception. However, if it is of cash value it is better to give the bride and groom the money before the wedding.
Traditionally no. The bride and groom enter as Mr. & Mrs. followed by the wedding party and the parents can follow behind or go ahead and mingle with the guests before the bride and groom enter the wedding reception.
It's possible, but I think the bride and groom should split the total cost for BOTH wedding rings.
only if she is in her wedding dress before the wedding
It is actually a myth that it's bad luck for the groom to see the wedding dress or see his bride in her wedding dress before the ceremony. The ritual is that the groom doesn't see the wedding dress on or off the bride before the wedding so he will be surprise at how beautiful she looks coming down the aisle.
To wear one's uniform for your wedding or not is a personal choice. If the wedding is on-base; a military wedding where the bride and groom come from the church under the crossed swords of their fellow officers is most impressive - if that is what the bride and groom want.
Black.
Depends on what the bride and groom wants.
It is thought to be bad luck if the bride and groom see each other on their wedding day before meeting at the altar. Whether true or not it is much more romantic for the groom to see how beautiful his bride to be looks as she comes down the aisle in her wedding dress.
As much as possible. The wedding planner has to no the bride. Otherwise the wedding wont be the bride's and groom's dream wedding, it would be the wedding planner.
Because they aren't really married then. It's alright for the bride and groom to sleep together on the night OF the wedding though.