Yeah, take notes

If you don't make any payments within the interest free 6 month period this is what you're gonna have to deal with.
You also need to consider how opening another line of credit will negatively impact your credit score, which may not matter to you now, but will catch up to you whenever you decide to make a serious purchase like a house or a car and many times even an apartment.
RATES AND FEES TABLE
WALMART® MASTERCARD® AND WALMART® CREDIT CARD ACCOUNT
Interest Rates and Interest Charges
Walmart® MasterCard® Walmart® Credit Card
Annual Percentage Rate (APR) for Purchases and Quick Cash Advances
22.90%
This APR will vary with the market based on the Prime Rate.
22.90%
This APR will vary with the market based on the Prime Rate.
APR for Cash Advances
25.90%
This APR will vary with the market based on the Prime Rate.
Not Applicable
How to Avoid Paying Interest on Purchases Your due date is at least 23 days after the close of each billing cycle. We will not charge you any interest on purchases if you pay your entire balance by the due date each month. Your due date is at least 23 days after the close of each billing cycle. We will not charge you any interest on purchases if you pay your entire balance by the due date each month.
Minimum Interest Charge If you are charged interest, the charge will be no less than $1.00. If you are charged interest, the charge will be no less than $1.00.
For Credit Card Tips from the
Consumer Financial Protection Bureau To learn more about factors to consider when applying for or using a credit card, visit the website of the Consumer Financial Protection Bureau at Learn more > Consumer Financial Protection Bureau.
Fees
Transaction Fees
Either
$5 or
3% of the amount of each cash advance, whichever is greater. Not Applicable
3% of each transaction. Not Applicable
Penalty Fees
Up to
$35 Up to
$35
Walmart Credit Card - Walmart.com