(Sorry, the first draft of this was asking about getting upgraded to E+ through the United Club Card but found out that Club Card upgrades are only available on reward tickets. Wasn't able to edit the title. This question relates to getting upgraded to E+ at the last minute since no seats assignments are available.) I have no status on United. I just booked 3 tickets TUL-RIC but was only able to secure seats assignments on the first of four legs (TUL-ORD). Lots of E+ seats available. Question is, if I don't buy E+ upgrades (which are currently available) do you think I have a chance of being put in E+ on the day of travel or more likely they upgrade someone else who already got an E seat assignment and give us seats in E?