всё, что не делается, всё к лучшему

[wondershot.livejournal.com]

Dear lovely Russian forum,

A friend of mine has used the expression "всё, что не делается, всё к лучшему". She translates it as "Everything that's done is done for good." Is this how you would translate it? What situations would you use it in?

It sounds kind of beautiful in that good, depressing Russian way.

Help me with this please?

[aleckii.livejournal.com]

I'm organizing this concert for children of an orphanage here in Kursk, Russia. This Friday, we're renting buses and bringing them to the concert hall in our University where there will be performances, songs, etc.

Anyway, I'm the MC of the day and unfortunately I'm not used to seasonal greeting in Russian. Help me with this please?

We would like to extend a warm welcome to everyone of you to this concert. First
of all, we would like to wish all of you a Happy New Year. May your new year be
filled with happiness, blessing, etc...
 
Translation- (Дамы и господа- ??) Добро пожаловать в наш концерт. Прежде всего, мы хотим
пожелать вам с новым годом (или) пожелаю всем крепкого здоровья, мудрасть,
счастья... (а что ещё можно здесь добовит?)

Today we'll be having performances, prepared by students from different
countries. We hope that you will like them.

Translation- Сегодня у нас будет выступления, подготовка студентов из разных стран мира.
Надеюсь вам всё етот понравиться. 

Any help will be appreciated, thanks!

(no subject)

[upthera44.livejournal.com]

What's the difference between "полтора" and "полутора"? I had always seen and used myself "полтора", which seems more common, but recently have read on separate occasions "полутора".