Assume you bet table maximum and want to increase your bet by betting a second box maximum. How much does your expected value and your variance grow, considering the following facts in card eating:
the casino allows ES and dealer does not take a hole card. effect: dealer does not eat any card if you surrender your only box. but dealer eats cards if you play 2 boxes and you surrrender just 1 of them. similar if you have bj.
i assume that the growth in expectation is quite small and it may be better to play just 1 box if i am afraid of variance, am i right?