Lunch and dinner rewards

I have never used a lunch reward before , and want to print a lunch reward for the buffet at the Bellagio. I will be printing the voucher on a Wednesday and flying in on a Thursday.
What is the lunch time limit for arriving before 3pm??
I think I will have enough time to fly in get my car and get to the Bellagio and the MLife desk before 2:30 but how does the change over from lunch to dinner work?
If it doesn't work out can I get a point refund? I won't be there by the next Monday lunch.
MO
I believe you will have to take that voucher to the Mlife desk and have them load the buffets to your account. My experience has been a wait at the Mlife desk of up to a half an hour. I don't they will give you a line pass, so you will have to deal with a long line to get into the buffet. You might be cutting this a little close. They are not going to allow you to eat a dinner buffet if you only have a reward for a lunch buffet. There is a big difference in Loyalty Points between lunch and dinner.
When I used a 2 for 1 MyVegas coupon at Mandalay Bay they gave me a voucher that had a value on it . When I took it to the cashier at the buffet she took the value on the voucher off the bill and I paid the difference. At the MIrage they loaded the value of the coupon on my card, then when I went through the cashier she swiped my card and I paid the difference.
No need to print just go to the M life desk and give them the reservation code/number. Bellagio buffet includes a line pass even if they don't tell you.
Every M life wait is different , I have waited almost an hour and Monte Carlos but usually have quick service at Bellagio. As to time to use the voucher again each is different. I think Bellagio was 24 hours to use it. So you could use it the next day, Once you redeem for a voucher you can NOT get a refund.
Hope this helps

Thanks all of the info is very helpful, one last question If I call it close at the Bellagio and am inside is there a time limit. it appears that the dinner buffet starts right after the posted lunch time stated on the coupon?
Bellagio will let you eat dinner as long as your in before the lunch time is over.
Once you redeem at the mlife desk, you cant get a refund. Last week at the Bellagio, it took 5 minutes to load the buffet on my card.Good luck and have fun.