Being is shape will help your wind, but it will not prevent altitude sickness if you are so inclined. Won't know until you get there. Here is what I have learned:

It will help if you get there at least a day in advance and stay at moderate altitude (6-7000 ft)

Rolaids will definately help. Part of the problem with altitude is it causes your system to become too acid and antacids help this problem.

Avoid caffeine and alcohol for at least 3 to 4 days until you adjust.

Drink, drink, drink.

Yes, diamox will prevent the symtoms, but is a diuretic (makes you pee more) so you have to drink even more, and it makes any carbonated beverage taste NASTY.

I used to take Diamox until I discovered ALTITUDE ADJUSTMENT from Sun Country inc. Order a couple of packets and start them a couple of days before you leave. I don't have to take Diamox any more since I started using them. Here is a link. All I can say is it works for me.

http://www.altitude-adjustment.com/