live deepstack tournament

Hello. Tonight i'm going to a live deepstack tournament and i would need some advice about how tight should i play and starting hands(i played only low stack tournaments).
15k chips, blinds level 1: 25/50

First you have to have patience and clear mind.

You have a 15000 chip starting stack with the first level being 25/50. This means you have 300 big blinds to begin with. Therefore you should be playing tight in the opening stages, only playing premium hands and low pocket pairs when you're in position and have the correct odds to call. During this stage you don't want to be getting into big confrontations when you have a marginal holding. I would try and play straightforward and then loosen up when the antes kick in stealing the blinds where possible. Hope this helps and good luck. Tell us how you do.

Thanks guys

I have got ticket to 100+10€ live deepstack tournament. Starting stack is 40k with blind raising every half hour, around 30-40 players are expected.
Whats your thougths how much will tourney last, on what player will be bubble, what will be starting blinds... any advice would be good.
Thanks