Reddit reviews Set of Six Blackjack Basic Strategy Cards

different cards for different tables. hit and stay on soft 17. single, double, and 4 and above decks. the surrender and can or cant double after splitting is written on the side of the cards. so at the most theres 6 different cards, but realistically, you only need 2, single and 4 or more, and you always play "hit on soft 17"
multi deck dealer hits on soft 17
single deck dealer hits on soft 17
all 6 cards for the low low price of 12.61

If you've only got a week of prep time, you're probably not trying to count cards or do any other kind of advantage play. So this is narrowed down to needing to know two things - where to get a table with fair/favorable rules, and the basic strategy for the rulesets you'll be playing under.

This link will cover much of the first part. It's taken from the CBJN, but omits all of the info that's specific to card counters, leaving just the Vegas section and just the rules for those casinos.

As a casual player, I would recommend trying to find the lowest minimum table that still ofers things like the dealer stands on soft 17, double down on any two cards including after split, etc. Use the rules that are state law in Pennsylvania as a guideline on what should be acceptable (for reference, those are blackjack pays 3 to 2, dealer must stand on soft 17, double on any 2 cards, double after split, split to 3 hands (except no resplitting aces), late surrender available.) This results in a house edge at roughly 0.36%; if you find better at a place near you, great.

I would bring no less than four strategy cards with you - one for multi-deck (4 or more decks) where the dealer stands on soft 17, one for multi-deck where the dealer hits on soft 17, and one two-deck games for each of those. Really, I'd just buy this or print your own from any site that allows that. You're probably not going to get good quality single deck unless you're going to the El Cortez anyway.